Question

A circular running track
has inner radius
126m and outer radius 140m, find the area of the
track​

Answer 1

Answer:

area of the larger circle= πr2

3.14×140×140=61544cm square

area of small circle= 3.14× 126×126= 49851

area of track is = area of large circle -area of small circle = 61544-49851=11693cm square

hope it helps:) ..pls follow

Answer 2

Answer:

$11704 \: {m}^{2}$

Step-by-step explanation:

Area of outer circle =

$\pi \: 140^{2}$

= 22/7 × 140 × 140 = 22 × 20 × 140

= 61600 m^2

Area of inner circle = 22/7 × 126 ×126

= 22 × 18 × 126

= 49896 m^2

Area of track = A of outer - A of inner

= 61600 - 49896

= 11704 m^2