Answer:
see explanation
Step-by-step explanation:
Using the given formula for area : A = [tex]\frac{1}{2}[/tex] bh
(a) given b = 8 and h = 5, then
A = [tex]\frac{1}{2}[/tex] × 8 × 5 = [tex]\frac{1}{2}[/tex] × 40 = 20 units²
(b) given A = 18 and b = 4, then
18 = [tex]\frac{1}{2}[/tex] × 4 × h = 2h ( divide both sides by 2 )
h = 9 units
(c) given A = 14 and h = 7, then
14 = [tex]\frac{1}{2}[/tex] × 7 × b = 3.5b ( divide both sides by 3.5 )
b = 4 units
