Question

Ques) an athlete runs around a circular park 10 times if diameter is 280m, find the distance covered by athlete in km

Answer 1

Step-by-step explanation:

Diameter of circular park= 280m

Radius of circular park= 140m

Distance covered by athlete in 1 round = 2πr

$= 2 \times \frac{22}{7} \times 140 \\ = 44 \times 20 \\ = 880 \: m$

Hence, the distance covered by athlete in 10 rounds= 10×880 = 8800 m = 8.8 km.

Answer 2

Answer:

perimeter of circle =

$2\pi$

multiplied by the radius

Step-by-step explanation:

radius = half of diameter

radius =140

= 2*22/7*140

=880m for 1 round

so for 10 rounds is 880*10=8800