razor99
  • razor99
help me plzzzz
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
razor99
  • razor99
|dw:1327404120182:dw|
razor99
  • razor99
find the area of the trapezium
razor99
  • razor99
i know the formulae but i dont know how to do

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razor99
  • razor99
here is the formulae
King
  • King
what do i hav to find?
razor99
  • razor99
|dw:1327404394659:dw|
razor99
  • razor99
area
razor99
  • razor99
plzzzzzzz help me
King
  • King
area of the whole house is 31cm^2? area of trapezium=16 area of rectangle =15
Diyadiya
  • Diyadiya
is that 7 cm?|dw:1327404717507:dw|
razor99
  • razor99
yes it 7 cm
razor99
  • razor99
this is a trapizium
razor99
  • razor99
i dont know how to draw nicely.
King
  • King
see razor,|dw:1327404780151:dw|
Diyadiya
  • Diyadiya
Okay here a=3cm b=5cm h=7-3=4cm Now Area= 1/2(a+b)h= 1/2* 8*4 =16 cm^2
razor99
  • razor99
thank Diyadiya
King
  • King
the whole house is a trapezium.....?
Diyadiya
  • Diyadiya
No Its a rectangle + trapezium right ?
razor99
  • razor99
yeah
razor99
  • razor99
king is correct
King
  • King
oh!
Diyadiya
  • Diyadiya
Question says to find the area of trapezium , not the whole house
razor99
  • razor99
yeah but the anserw u gave was wrong
Diyadiya
  • Diyadiya
Oh wait then .. letme check again
King
  • King
the house is the trapezium...
razor99
  • razor99
okay the formulae says 1/2(a+b)h
King
  • King
u need to giv us proper diagram....
razor99
  • razor99
but didiya u have multiplied it
King
  • King
if u hav a question can u post it?
Diyadiya
  • Diyadiya
\[\frac{1}{2} \times (5+3) \times 4= \frac{1}{2} \times 8 \times 4 =16\]
Diyadiya
  • Diyadiya
What is your final answer ?
razor99
  • razor99
but in the back of the book its say the answer is its 31cm^2
Diyadiya
  • Diyadiya
Its the area of the whole house thats area of rectangle + area of trapezium
lalaly
  • lalaly
yeah diya found the area of the trapezium which the top part =16cm^2 then u find the are a of the rectangle at the bottom, = 5*3 =15cm^2 then the area of the whole thing together is 16+15=31cm^2
anonymous
  • anonymous
total At=area of rectangle + area of trapezoid At= 3x5 + (1/2)(3+5)4 At= 15 + 32/2 At= 15 + 16 =31 square meter ans....
razor99
  • razor99
ohh i get it know
razor99
  • razor99
thanx for the help everyone.
King
  • King
i gave u answr 31!

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