Question

the radius of a circular sheet of metal is 14 m.a circular piece of sheet is cut out from its center.the piece has the radius of 7 m.what is the area of the sheet left​

Answer 1

Answer:

21.98 cm²

Step-by-step explanation:

Area of the circle with radius 4 cm = πr² = π(4)² = 16 π cm²  

Area of the circle with radius 3 cm which is removed = π(3)² = 9π cm²  

Remaining area = 16π - 9π = 7π = 7 x 3.14 = 21.98 cm²