A heap of rice is in the form of cone of diameter 12m, and height 8m. How much of canvas
cloth is required to cover the heap?
Answers
Answered by
6
Answer:
answer is 188.4
Step-by-step explanation:
a cone , volume is
1
3
×
π
r
2
×
h
radius
=
12
2
=
6
height
=
8
⇒
V
=
(
1
3
)
×
3.14
×
6
2
×
8
⇒
V
=
301.44
m
3
The amount of canvas cloth required is the curved surface area of the heap.
Curved surface area
=
π
×
r
×
l
Now, we know that
l
2
=
r
2
+
h
2
=
6
2
+
8
2
=
100
∴
l
=
10
c
m
Therefore, amount of cloth required
=
π
×
6
×
10
=
3.14
×
10
×
6
=
188.4
c
m
2
Answered by
1
Answer:
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Hope it helps.
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