Question

EXERCISE 11.3
22
1. Find the circumference of the circles with the following radius: (Take t=
7
(a) 14 cm
(b) 28 mm
(c) 21 cm​

Answer 1

$\huge\underbrace\mathfrak\red{answer}$

Step-by-step explanation:

2πr=2×22/7×14

=88cm^2

Answer 2

$\small \sf \purple {\boxed {Circumference\:of\:circle\:= \:2πR}}$

a) 14 cm

$2 \times \pi \times 14$

$2 \times 14 \times 2$

$56 \: cm$

b) 28mm

$2 \times 14 \times 4 = 112 \: mm$

c) 21 cm

$2 \times 14 \times 3 = 84 \: cm$