Question

Q3. A heap of rice is conical in shape. The circumference of its base is 8.5 m and
its height is 1.2 m. [4]
i. Find the volume of rice, in m3, giving your answer correct to 2
significant figures.

Answer 1

Answer:

67.11m  maybe>

Step-by-step explanation:

Given a help of rice in shape of a cone of height=3.5

radian=

2

9

​

m=4.5 m.

volume of heap =

3

1

​

πr

2

h=

3

1

​

×π×(4.5)

2

×3.5

[volume=74.18m

3

]

canvas cloth require to cover the help = CSA of cone

πl

Where l=

π

2

+h

2

​

l=

(4.5)

2

+(3.5)

2

​

=4.75

Now CSA =πrl=3.14×4.5×4.75

CSA=67.11m

2