Question

plz tell fast i will mark you as BRAINLIEST AND THANKS you​

Answer 1

Step-by-step explanation:

1) Circumference of circle =

$2\pi \: r$

a) 98 m

$= 2 \times \frac{22}{7} \times 98 \\ = 2 \times 22 \times 14 \\ = 616 \: m {}^{2}$

b) 8.75 cm

$= 2 \times \frac{22}{7} \times 8.75 \\ = 2 \times 22 \times 1.25 \\ = 55 \: cm {}^{2}$

2) area of circle =

$\pi \: r {}^{2}$

a)

$= \frac{22}{7} \times 5.6 \times 5.6 \\ = 22 \times 0.8 \times 5.6 \\ = 98.56 \: m {}^{2}$

b)

$= \frac{22}{7} \times 4.2 \times 4.2 \\ = 22 \times 0.6 \times 4.2 \\ = 55.44 \: m {}^{2}$

Hope, it helpful for you