Question

Could someone explain to me how to do this?

Answer 1

Explanation:

TWO triangles 5 x 12 area = 2 x 1/2 (5)(12) = 60 cm^2

rectangle base 5 x 3 = 15 cm^2

side 3 x 12 = 36 cm^2

back 3 x 13 = 39 cm^2 ( find the 13 cm length via Pythagorean theorem)

Total area : 60 + 15 + 36 + 39 = 150 cm^2