Question

1. Find the circumference and area of a corcle of (iii) diameter 77
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Answer 1

Answer:

241.9

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Answer 2

Answer:

Formulas using

$\pi = 22 \div 7$

$circumference \: of \: circle \: = 2\pi \: r$

$area \: of \: circle \: = \pi \: r {}^{2}$

$radius \: = \: diameter \div 2$

Answer

Radius = 77/2

= 38.5

Area = 22/7 × (38.5)^2

= 22/7 × 1482.25

= 32609.5/7

= 4658.5

Circumference = 2×22/7 × 38.5

= 1694/7

= 242

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