One of the important question for the board exam class 10 from
mensuration chapter.This question is from r d sharma class 10 maths.
chapter-15.4 question number-1 maths r d sharma,mensuration.
In this question we have to find the area of the plot given that
a plot in the form of a rectangle ABCD having semi-circle on BC.
If AB = 60m and BC = 28m.
Given, ABCD is a rectangle
So, AB = CD = 60 m
And, BC = AD = 28 m
For the radius of the semi-circle = BC/2 = 28/2 = 14 m
Now,
Area of the plot = Area of rectangle ABCD + Area of semi – circle
= (l x b) + ½ πr2
= (60 x 28) + ½ (22/7)(14)2
= 1680 + 308
= 1988 cm2