Answer:
a) 30 square units
b) 36 square units
c) 18 square units
Explanation:
Area of a triangle = 1/2 × base × height
Part (a)
Base = 10
Height = 6
⇒ Area = 1/2 × base × height
= 1/2 × 10 × 6
= 30 units²
Part (b)
⇒ Area = 1/2 × base × height
= 1/2 × 12 × 6
= 36 units²
Part (c)
⇒ Area = 1/2 × base × height
= 1/2 × 6 × 6
= 18 units²