Answer:
7. A. 154 square centimeters
8. B. 7.9 m
9. B. 132 m
Step-by-step explanation:
7. Area = πr²
r = d/2 = 14/2 = 7
Area = (22/7) x 7²
= 22 x 7
= 154 cm²
8. The edges is the circumference. Thus, Circumference = 2πr or πd
Using πd, 3.14 x 2.5 = 7.85
= 7.9 m (correct to the nearest tenth)
9. Circumference = πd
= (22/7) x 42
= 22 x 6
= 132 m
