Question

Given the formula A = 1/2 (a+b)h, find:

1. a if A = 360, b - 25, h = 16
2. b if A = 252, a = 18, h =12

Answer 1

11,495 and 6,030

Explanation:

1. A=1/2(a+b)h

2A=(a+b)h

2Ah=a+b

2Ah-b=a

a=2×360×16-25

a=11,495

2. b=2Ah-a

b=2×252×12-18

b=6,030