Question

Luke weeded out the grass in his lawn in the form of a sector of a circle. Find the area of the lawn which still needs to be weeded out if the radius of the weeded out sector is 4 yards and the angle is 60°. The Luke's lawn is a rectangular region with length 8 yards and width 6 yards. ​

Answer 1

Hey Friend,

Let the radius of first hemisphere be 'r' units

Let the radius of second hemisphere be 'R' units

therefore,

2 x \piπ x r^2 / 2 x \piπ x R^2 = 25 / 49

r^2 / R^2 = 25 / 49

r / R = 5 / 7

Therefore, the ratio of radii is 5:7.

Hope it helps!

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Answer 2

Answer:

Area that still needs to be weeded out is 45.63 (yards)²

Step-by-step explanation:

Refer to the attached images !