Question

find the area of the circle in each of the following cases.
Radius=3.5 cm Diameter= 14km

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

1. 38.5cm²

2. 154km²

Step-by-step explanation:

Area of a circle = πr²

1. radius = 3.5cm

⇒ π×3.5×3.5

⇒22/7×12.25

⇒38.5cm²

2.Diameter = 14 km

Radius = 14/2=7km

⇒π×7×7

⇒22/7 × 49

⇒22×7

⇒154km²