gshreya2005
gshreya2005 gshreya2005
  • 01-02-2019
  • Mathematics
contestada

please help me because I don't understand how to do it.:)

please help me because I dont understand how to do it class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 01-02-2019

Answer:

231.7  cm^2

Step-by-step explanation:

We can find the area  by adding the area of the rectangle to the area of the 2 triangles.

The rectangle is

7+7+7 by 9

21 by 9

A = length * width

A = 21*9

A = 189

The triangles are identical so we find the area of one of them and multiply by 2

The base is 7 and the height is 6.1

A = 1/2 b*h

but since we have 2 of them

2A = 2*1/2 b*h

2A = b*h

2A = (7* 6.1)

     = 42.7


Add the rectangles area to the area of the two triangles

189 + 42.7

231.7  cm^2

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