Question

find the circumference of the circle whose area is equal to the sum of the areas of the three circles with radii 2cm,3cm and 6cm​

Answer 1

Answer:

7cm

Step-by-step explanation:

A = A1 + A2 + A3

A = pie × (2)^2 + pie × (3)^2 + pie × (6)^2

A = pie (4+9+36)

pie × R^2 = pie × 49

R^2 = 49

R = 7cm