Question

Help! I need to find the area of this figure

Answer 1

You need to know 2 things:

1) The formula for the area of a trapezoid
2) The formula for the area of a triangle.

All the necessary dimensions are given. You just need the formulas.

Answer 2

Do you know the formulas?

Answer 3

Triangle A=1/2 bh
Trapezoid A= 1/2 (b1+ b2) * h

Answer 4

Correct!

So can you rewrite those 2 formulas with the proper values taken from your diagram?

Answer 5

Am I adding the area of the trapezoid with the area of the triangle?

Answer 6

Yes, once you find them. :-)

Answer 7

I'll give you a freebie:

Area of a triangle:
A = 1/2*B*H

A = 1/2*12*13.42

Can you do the same for the trapezoid?

Answer 8

A= 1/2 (11.75 + 18) * 6.12

Answer 9

RIGHT!!!! :-)

So the triangular A + trapezoidal A is your answer!
Can you solve them?

Answer 10

For the trapezoid I got 91.035
and for the triangle I got 80.52

Answer 11

Right again!!!

Just add'em together, and you have the area of the entire figure!! :-)

Answer 12

Thank you! :-)