Question

The circumference of a circle is 440cm.Find its radius and diameter.​

Answer 1

Answer:

2πr=440

2×22/7×r=440

r=440×7÷44=10×7=70cm

radius=70cm

diameter=2r=2×70=140cm

Answer 2

Hey mate ☺️

$440 = 2\pi \: r \\ \\ \frac{440}{2} = \pi \: r \\ \\ 220 = \frac{22}{7} \times r \\ \frac{220}{1} \times \frac{7}{22} = \: r \\ \\ 10 \times 7 \: = \: r \\ \\ r \: = \: 70cm \\ d = 2r \\ d = 70 \times 2 \\ d = 140cm$

I Hope it helps you ☺️ ✌️ ✌️