Question

18 ) What is the radius of the circle, whose circumference is 440 cm?
O
A) 71.5 cm
B ) 70 cm
O
C) 70.5 cm
O
D ) 72.2 cm​

Answer 1

Answer:

$circumference = 2\pi \: r \\ 440 = 2 \times \frac{22}{7} \times r \\ r = 440 \times \frac{1}{2} \times \frac{7}{22} = 70cm$