Question

*Area of circle with radius 2r cm is? ( take = 3.14)*
1️⃣ 12.56 r^2 sqcm
2️⃣ 1256 r^2 sqcm
3️⃣ 12.56 r^2 cm
4️⃣ 12.56 r cm

Answer 1

Answer:

12.56 r² cm²

Step-by-step explanation:

r = 2r

area of circle = πr²

= [ 3.14 × (2r)² ] cm²

= [ 3.14 × 4r² ] cm²

= 12.56 r² cm²