MiKaL00v3 Posted November 6, 2008 Share Posted November 6, 2008 I BEG YOU TO HELP ME PLEASE !!!!! I have got a maths test for tomorrow and I can't do two exercices. Please help me. Here's one of them : There's a drawing of a triangle and a smaller one inside it but I can't insert it. I don't thinK it matters too much as its not exact. Theres the three summets, R, P AND Q then in the smaller triangle there's three summets U, T AND S. P, S an U are all on the same line sme as Q,T,S and T,U,R. TQ=1/2ST UR=1/3TU SP=1/4SU. We know that the air of the smaller triangle SUT is 5cm². CALCULATE THE AREA OF THE TRIANGLE PQR. PLEASE HEEEELP ! Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 It would be much easier if you could post it or email the picky I cant get my head around all the letters Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 Does the drawing show one big triangle divided into 4 smaller triangles? Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 Does it tell you what type of triangles they are? Silver an Freddie can sort this one:wink2: Ill get some paper and a pen Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 Ill just posty the pic for you. THANKYOU SO MUCH GUYS Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 Does it tell you what type of triangles they are? Silver an Freddie can sort this one:wink2: Ill get some paper and a pen Me! I'm hopeless at maths I was just trying to work out what the thing looked like. I had some vague idea of trying to work out the areas of the individual triangles, if only I could remember the formula for doing it. Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 Me! I'm hopeless at maths I was just trying to work out what the thing looked like. I had some vague idea of trying to work out the areas of the individual triangles, if only I could remember the formula for doing it. Yeh if we can see it , it really helps , all I can piture is A , Z , P , Q and letters Your right there will be a formula for it Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 (edited) Yeh if we can see it , it really helps , all I can piture is A , Z , P , Q and letters Your right there will be a formula for it kay sorry the writings in french cause I live in France can you help ? btw, the triangle isnt exact Edited November 6, 2008 by MiKaL00v3 Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 :eek: FD!! Does STU look like a right angled triangle to you? or an isosceles? Is the formula for area 1/2 (half) base x height? Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 Ok So the area of that triangle is 5cm2 , now it has equal sides so we can work backwards and from that determine the side length and then .... easy Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 :eek: FD!! Does STU look like a right angled triangle to you? or an isosceles? Is the formula for area 1/2 (half) base x height? It has equal length the triangle with the 5cm2 area ... http://www.icteachers.co.uk/children/sats/triangles.htm Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 Ok So the area of that triangle is 5cm2 , now it has equal sides so we can work backwards and from that determine the side length and then .... easy Easy ??! hmmmm ... could you help me with the answer ? (tell me *cough cough*) Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 It has equal length the triangle with the 5cm2 area ... http://www.icteachers.co.uk/children/sats/triangles.htm is that for me or for silver ? Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 Easy ??! hmmmm ... could you help me with the answer ? (tell me *cough cough*) Have you learnt a formula for working out the area of a triangle? Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 is that for me or for silver ? Just in general and me working backwards I think the length of each side is 3.4cm http://www.onlineconversion.com/shape_area_equilateral_triangle.htm Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 is that for me or for silver ? Me I think Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 Have you learnt a formula for working out the area of a triangle? errrm ... maybe, I really dunno Ive forgotten. If you tell me Id remember but like that ... Im ****ty in maths Just in general and me working backwards I think the length of each side is 3.4cm http://www.onlineconversion.com/shape_area_equilateral_triangle.htm okay but does that help find the answer ? Me I think kay Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 Ok So the area of that triangle is 5cm2 , now it has equal sides so we can work backwards and from that determine the side length and then .... easy how dyou know it has equal sides ? Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 TQ = 3.2 UR = 1.13 SP = 0.85 Thats what I think Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 how dyou know it has equal sides ? mmmmmmmmmmmmmmmm Good question , every angle 60 degrees? Does the french say any more than that? This is defo the way to work it out btw Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 mmmmmmmmmmmmmmmm Good question , every angle 60 degrees? Does the french say any more than that? This is defo the way to work it out btw Errrrm wait a sec Ill look but thanx :thumb_yello: Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 Errrrm wait a sec Ill look but thanx :thumb_yello: Actually Im thinking the LARGE triangle is equilateral now .... Link to comment Share on other sites More sharing options...
silver Posted November 6, 2008 Share Posted November 6, 2008 Actually Im thinking the LARGE triangle is equilateral now .... NO I think the large triangle is right-angled Link to comment Share on other sites More sharing options...
FREDDIESDOUBLE Posted November 6, 2008 Share Posted November 6, 2008 NO I think the large triangle is right-angled MAN this is tough!! Link to comment Share on other sites More sharing options...
MiKaL00v3 Posted November 6, 2008 Author Share Posted November 6, 2008 Actually Im thinking the LARGE triangle is equilateral now .... is that good or bad ? Sur la figure ci-dessous qui n'est pas a l'echelle = on the figure below which isn't exact, les points P,S,U sont alignes = the pints P,S And U are aligned (in one straight line) ainsi que Q,T,S et ,T,U,R= aswell as Q,T,S and,TU,R on sait que l'aire du triangle STU est 5cm² = we know that the area of the triangle STU is 5cm² CALCULER L'AIRE DU TRIANGLE PQR = calculate the area of the traingle PQR thats all Link to comment Share on other sites More sharing options...
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