Q3 of 26 Page 242

A car has two wipers which do not overlap. Each wiper has a blade of length 25 cm. sweeping through an angle of 115o. Find the total area cleaned at each sweep of the blades.

(use π = 22/7)

Radius = 25cm


Angle = 115°






Area of sector ACD = 627.22cm2


For 2 such wipers: 2 × 627.22


Area = 1254.45 cm2


More from this chapter

All 26 →
1

A chord of a circle of radius 10 cm. subtends a right angle at the centre. Find the area of the corresponding :

(use π = 3.14)


i. Minor segment


ii. Major segment

 2

A chord of a circle of radius 12 cm. subtends an angle of 120o at the centre. Find the area of the corresponding minor segment of the circle

(use π = 3.14 and √3 = 1.732)

 4

Find the area of the shaded region in figure, where ABCD is a square of side 10 cm. and semicircles are drawn with each side of the square as diameter

(use π = 3.14)


 5

Find the area of the shaded region in figure, if ABCD is a square of side 7 cm. and APD and BPC are semicircles.

(use π = 22/7)