Question

the radius of circle whose diameter is 5.12 centimetre​

Answer 1

area :-

$\pi {r}^{2}$

$r = 5.12$

$\pi = 3.14$

$3.14 \times {5.12}^{2}$

$3.14 \times 26.2144$

$area = 82.313216 \: \: {cm}^{2}$

perimeter:-

$2\pi \: r$

$2 \times 3.14 \times 5.12$

$32.1536 \: \: cm$

Answer 2

Answer:

Step-by-step explanation:

DIAMETER =5.12

RADIUS=1/2×diameter

=1/2×5/12

SO IF WE RECIPROCAL IT BECOMES

=1/2 × 12/5 = 6/5

5) 6 (1.2

-5

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1O

10

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××

RADIUS= 1.2ans

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