Question

*What is the length of radius of circle if perimeter is 42 m?*

1️⃣ 42 cm
2️⃣ 21 sqcm
3️⃣ 21 cm
4️⃣ 42 sqcm
​

Answer 1

Answer:

21 is the correct answer

Answer 2

Answer:

perimeter of circle is 2× 22/7 ×r = 42

1 ( 2×22×r ) = 7 (42)

44r = 294

r = 6.6818181818 m

I expect that it will helpful to you dear