MATHEMATICS · Multi-part · CBSE · Mathematics · Areas Related to Circles · Areas Related to Circles
Problem
A rectangular lawn is 25 m long and 1800 cm wide. Along the entire width on one side, a semicircular flower bed is attached externally, the diameter of the semicircle being equal to the width of the lawn.
Answer the following:
(a) Calculate the total area of the lawn together with the semicircular flower bed, expressing your answer in square metres correct to one decimal place.
(b) Determine the length of fencing required to enclose the entire outer boundary of the combined figure, giving the answer in metres correct to two decimal places.