the diameter of a 2.5 m long roller is 92 cm . if its take 150 revolution to level a playground then find the approximate cost of levelling the ground at the rate of 60 paise per square meter ( π - 22 / 7
Answers
Answered by
1
Step-by-step explanation:
Diameter= 2.5m
length= 92cm,
1m=100cm
2.5m=250cm
let length be height
Radius=diameter÷2
Radius=250/÷2
Radius=125cm
area of curved surface =2πrh
2× 22÷7 ×125× 92=
506000/7=72285.714cm^2
it took 150 revolutions, So
72285.714× 150= 10842857.1cm
Cost of levelling the ground= 60 paise
10842857.1× 60= 650571426 paise
1 paise = 1÷100 ruppees
650571426÷100= 6505714.26 ruppees
So, our answer is = 6505714.26 ruppees
Similar questions