Question

solve this question ​

Answer 1

Answer:

C = 2πr

52.8 = 2πr

52.8/2 = πr

26.4 = 22r/7

26.4×7/22 = r

8.4cm = r

d = 2r = 2×8.4cm = 16.8cm

Diameter = 16.8cm

Answer 2

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$circumference \: \: of \: \: a \: \: circle \: = \pi d$

Let us assum the value of pie be $\frac{22}{7}$

Let the diameter be $\huge\red{x}$

$\orange{\underline{\underline{Therefore}}}$

$52.8\: = \frac{22}{7} \times x$

${\red{x}} \: = \: 52.8 \times \frac{7}{22}$

${\red{x}} \: = \: \frac{369.6}{22}$

${\red{x}} \: = \: \frac{369.6 \times 10}{22 \times 10}$

${\red{x}} \: = \: \frac{3696}{220}$

${\red{x}} \: = \: 16.8$

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$\blue{\underline{\underline{Therefore}}}$

The circumference is of 16.8 cm

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