Question

calculate the area of the circle whose inner radius is 5 cm and outer radius is 10 cm ​

Answer 1

Answer:

1235.5cm²

Step-by-step explanation:

$\LARGE\fbox{According to the question:-}$

The area of the circle whose inner radius = 5 cm

, and outer radius = 10 cm ​

$\LARGE\fbox{formula to solve}$

${\pi (R^{2} -r^{2} )$

$\LARGE\fbox{let's solve}$

$3.14(10^{2} -5^{2} )\\=3.14\times75\\=1235.5 cm^{2}$