Question

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In a circular garden of diameter 150 m, a pond is constructed in the form of a circle with radius 20 m
Find the area of the land left out. Use r = 3.14.
12 The inner and outer radii of a cylin​

Answer 1

Answer: Diameter of the garden=150m

Radius of the garden=150/2=75m

Also,

Radius of the pond=20m

Hence, area of the field left out=

Area of garden - Area of pond

=3.14×75^2 - 3.14×20^2

=3.14(5625 - 400)

=3.14×5225

=16405.5 sq. m