Question

find the area of of circular pathway whose outer radius is 32 cm and inner radius is 18 cm​

Answer 1

Step-by-step explanation:

Radius of the outer circle R = 32 cm Radius of the inner circle r = 18 cm Area of the circular pathway = π(R2 – r2) sq. units = 227227(322 – 182) cm2 = 227227 x (32 + 18) x (32 – 18) cm2 = 227227 x 50 x 14 cm2 = 2,200 cm2 Area of the circular pathway = 2,200 cm2m/995318/find-the-area-of-a-circular-pathway-whose-outer-radius-is-32-cm-and-inner-radius-is-18-cm

Answer 2

$22000 {cm}^{2}$

Step-by-step explanation:

$raidus \: of \: outer \: circle \: = r1 = 32cm \\ raidus \: of \: inner \: circle \: = r2 = 18cm\\ area \: of \: circular \: pathway \: = \pi( {r1}^{2} - {r2}^{2} ) \\ \frac{22}{7} ( {32}^{2} - {18}^{2} ) \\ \frac{22}{7} (32 + 8) \times (32 - 8) \\ \frac{22}{7} \times 50 \times 14 = 22000 {cm}^{2}$