The diameter and length of a roller is 120cm and 84cm respectively. To level the ground, 200 rotations of the roller are required
Answers
Answered by
4
Answer:
Total Cost of leveling the ground = Rs. 6336
Step-by-step explanation:
Given: Diameter of Roller = 120 cm
Length of Roller = 84 cm
Rate to level the 1 m² ground = Rs. 10
To find: Total cost to level the ground.
Radius of roller, r =
Height of roller, h = 84 cm
Surface area of Road leveled in 1 revolution = Curved surface area of cylinder
Surface area of Road leveled in 200 revolution
= 200 × Curved surface area of cylinder
=
=
=
= 6336000 cm²
= 633.6 m² ()
Thus, Total Cost of leveling the ground = 633.6 × 10 = Rs. 6336
Therefore, Total Cost of leveling the ground = Rs. 6336
Total Cost of leveling the ground = Rs. 6336
Step-by-step explanation:
Given: Diameter of Roller = 120 cm
Length of Roller = 84 cm
Rate to level the 1 m² ground = Rs. 10
To find: Total cost to level the ground.
Radius of roller, r =
Height of roller, h = 84 cm
Surface area of Road leveled in 1 revolution = Curved surface area of cylinder
Surface area of Road leveled in 200 revolution
= 200 × Curved surface area of cylinder
=
=
=
= 6336000 cm²
= 633.6 m² ()
Thus, Total Cost of leveling the ground = 633.6 × 10 = Rs. 6336
Therefore, Total Cost of leveling the ground = Rs. 6336
Answered by
1
Answer:
do you need total area of the ground??
here is your ans. :
given data ..........
- height = length of roller = 84
- rediius = 60
L.S.A of cylinder = 2πrh
= 2×(22/7) × 60 × 84
= 2×22×60×12
= 44×60×12
= 3168
total area of ground
= L.S.A of cylinder × no. of rotation
= 3168 × 200
= 633600 cm^2
........................HOPE IT HELPS YOU......................
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