Question

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

Answer 1

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