Question

NEED HELP ASAP PLEASE

Answer 1

see explanation

Explanation:

Given

A =
`(1)/(2)` bh

a. substitute b = 6 and h = 5 into the formula

A =
`(1)/(2)` × 6 × 5 =
`(1)/(2)` × 30 = 15 units²

b.

Multiply both sides of the formula by 2

2A = bh, that is

bh = 2A ← divide both sides by b

h =
`(2A)/(b)` =
`(2(16))/(4)` =
`(32)/(4)` = 8

c

Using

bh = 2A ← divide both sides by h

b =
`(2A)/(h)` =
`(2(12))/(4)` =
`(24)/(4)` = 6