Answers :

1. 19.625 cm

2. 113.04 m

3. 314 m

4. 530.66 cm

5. 50.24 cm

Explanation and Solution :

1. Given : 2.5 cm

Formula :

A = π r²

= π (2.5cm)²

= π (2.5 cm) (2.5 cm)

= 6.25π cm

For sure answer, multiply 6.25 cm into pi (π)

Remember, the value of π is always 3.14.

6.25 × 3.14 = 19.625 cm

2. Given : 6 m

Formula :

A = π r²

= π (6m)²

= π (6m) (6m)

= 36π m

For sure answer, multiply 36 m into pi (π)

Remember, the value of π is always 3.14.

36 × 3.14 = 113.04 m

3. Given : 10 m

Formula :

A = π r²

= π (10 m)²

= π (10m) (10m)

= 100π m

For sure answer, multiply 100 m into pi (π)

Remember, the value of π is always 3.14.

100 × 3.14 = 314 m

4. Given : 13 cm

Formula :

A = π r²

= π (13m)²

= π (13 cm) (13 cm)

= 169π cm

For sure answer, multiply 169 cm into pi (π)

Remember, the value of π is always 3.14.

169 × 3.14 = 530.66 cm

5. Given : 4 cm

Formula :

A = π r²

= π (4 cm)²

= π (4 cm) (4 cm)

= 16π cm

For sure answer, multiply 16 cm into pi (π)

Remember, the value of π is always 3.14.

16 × 3.14 = 50.24 cm

Hope this will help you!

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