Question

a circle of diameter 7 cm

Answer 1

Step-by-step explanation:

Diameter = 7 cm

Radius = 7/2 cm

Area of a circle =

$\pi {r}^{2}$

$= \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2}$

$= \frac{77}{2} = 38.5 \: {cm}^{2}$

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Answer 2

Answer:

Radius is the circle is 3.5 cm.

Step-by-step explanation:

Circumference= 2πr

Circumference= 2πr2*22/7*3.5

Circumference= 2πr2*22/7*3.52*22/7*35/10

Now simplify and you will get the answer as 22cm.

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