Question

!!

8 cm
20 cm



O 503 cm
O 4,021 cm
O 1,005 cm?
O 1,407 cm?

Answer 1

1,005cm²

Explanation:

First, you need to know the area of a cylinder and also the value of pi.

Area = 2πrh

pi = π = 3.14

r = radius = 80cm

h = height of cylinder = 20

now let's substitute

`2 * 3.14 * 80 * 20 = 1004.9{cm}^(2)`

but to the nearest square centimetre is.

1005cm²

because the number after the point is more than 4 so we add one to the last number before the point.