Question

I need the answer to the picture above

Answer 1

112.5 cm

Explanation:

18+12 /2 x 7.5

15x7.5

112.5

Answer 2

A = (a+b)h/2

a = 12

b = 18

h = 7.5

A = (12+18)(7.5/2)

A = 30(3.75)

A=112. 5cm