Question

find the circumference and area of the circle with the following radius(1) 21 m

Answer 1

Hiii..
Circumference= 2πr
=
$2 \times 22 \div 7 \times 21$
44×3= 132
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Answer 2

r = 21m
pie=22/7
circumference = 2×pie×r
=2×22/7×21 m
=132 m
Area = pie×(r)^2
= 22/7 × 21× 21
=1386 m^2