how many meters of 5m wide cloth will be required to make a conical tent of , the radius of whose base is 3.5 m and height is 12 m
Answers
Answered by
219
r = 3.5 m
h = 12 m
slant height l = root of r2 + h2
= root of 3.5 square + 12 square
= 12.5 m
CSA = pi r l
= 22/7 * 3.5* 12.5
= 137.5 m2
let x m of cloth be required to make the tent.
thn CSA of conical tent = area of cloth.
5x = 137.5
therefore , x = 137.5 / 5
= 27.5 m
hence , 27.5 m cloth is required to make the conical tent.
HOPE IT CAN HELP:)
h = 12 m
slant height l = root of r2 + h2
= root of 3.5 square + 12 square
= 12.5 m
CSA = pi r l
= 22/7 * 3.5* 12.5
= 137.5 m2
let x m of cloth be required to make the tent.
thn CSA of conical tent = area of cloth.
5x = 137.5
therefore , x = 137.5 / 5
= 27.5 m
hence , 27.5 m cloth is required to make the conical tent.
HOPE IT CAN HELP:)
ilml:
if i helped please mark it as the brainliest
:)
Answered by
43
Answer:
27.5 m
Step-by-step explanation:
l = √h2 + r2 = √(3.5)2 + (12)2 = √12.25 + 144
= √156.25 = 12.5 m
Curved surface area = πrl = 22 / 7 × 3.5 × 12.5 = 137.5 m2
Area of cloth = 137.5 m2
Length of cloth required = C.S.A. / Width
l = 137.5 / 5 = 27.5 m
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