Question

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?

Answer 1

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

Answer 2

Answer:

do some reading before u travel to a new country. If u're not aware of their culture and customs.

do some reading could mean "do some research" before u actually do that thing. Like, read some guide books and other stuff on internet as well. To be better aware of that new place where ur travelling to.

Do some reading also means to take up reading as a hobby or even for general knowledge.

Hope it helps.