Question

answer question 3 fast

Answer 1

area of circle = pie r2 = 301.84 cm2

=> r2 = 301.84/pie = 96.04 cm2

=> r = 9.8 cm

Therefore, circumference of the circle = 2pie.r = 2 X 22/7 X 9.8 = 61.6 cm

Answer 2

Given, area of circle = 301.84

we know that area of a circle = πr²
here, as area (πr²) = 301.84

3.14 x r² = 301.84. ( We get this by substitution of the value of pi)

=>. r² = 96.1
r = 9.8

now, you know that circumference itna circle = 2πr and we just found R = 9.8

2x9.8x3.14 = the circumference of the circle.

therefore,
the circumference of the circle = 61.54

hope this helps...