Question

What are the dimensions of the rectangle that is the lateral surface of the right circular cylinder shown?

8 cm by 3 cm
8 cm by 6 cm
8 cm by 6π cm
8 cm by 9π cm

Answer 1

8cm by 6πcm

Explanation:

What the person above showed that work is right :)

Answer 2

We are given cylinder

radius =r=3cm

height=h=8cm

now, we can find surface area

`SA=2\pi r h`

now, we can plug values

`SA=2\pi *3*8`

now, we need to find dimensions of rectangular with same area

we know that

Area of rectangle =length*width

And each option has one of dimension as 8

so, we can write it as

`A=SA=8*2\pi *3`

`A=8*6\pi`

so,

length =8cm

width
`=6\pi cm`

so, option-C..............Answer