Question

a car has two wipers which do not overlap.each wiper has a blade of length of 25cm sweeping through an angle of 115.find the total area cleaned at each sweep of the blades.(π22/7

Answer 1

Answer:

Step-by-step explanation:

GIVEN

. THE CAR HAS TWO WIPER S

. LET THITA BE ' @ '

. SO

. THE LENGTH OF WIPER

. = 25 CM = R

. WHICH IS RADIUS

. THEN

. THE TOTAL AREA CLEANED

. = 2 { @ / 360 * p R ² }

. 2 { 115 / 360 * 22 / 7 * 25 * 25 }

. 2 { 23 / 72 * 22 / 7 * 625 }

. 23 / 36 * 22 / 7 * 625

. 23 / 18 * 11 / 7 * 625

. 1254 . 96 CM ²

.

. Hope it helps

Answer 2

angle made by the each blade= 115. Total area swept by two blades = area of the sector with radius 25 cm and angle 155 + 155 230. = X/360 x πr*2 = 230/360 x 22/7 x 25 x 25. =1254.96 =1255 cm square ( approximately )