Question

find the surface area of the cylinder. use 3.14 for pie

Answer 1

The area of the ends is pi x r squared. r = d/2 = 1 so the ends are each pi squared. The surface of the remainder is the height (15) x the circumference (pi x d = 6.28). Multiply these out and don't forget you need two ends. Add 'em together...

Answer 2

Look, multiply 3.14 x 3.14 x2
Then, multiply 15 x 6.28.
Then, add the two numbers together.
Then write down the answer, followed by \[cm ^{2}\]
That's it.

Answer 3

The answer's going to be about \[113 cm ^{2}\]

Answer 4

A(100.48

B( 97.43

C(36.28

D(33.14

Answer 5

Oops -- pls accept my apology. I squared pi, not the radius, for the ends, for some reason.
It's 6.28 x 15, still but the ends are \[1^{2} \times \pi\] so it's
6.28 x 15 added to
2 x pi = 6.28
So, the answer is 16 x 2 x pi = 16 x 3.14 = ?

Answer 6

Er, make that 16 x 6.28, you idiot Biffo. I think it's time for food and bed.

Answer 7

Er, make that 16 x 6.28, you idiot Biffo. I think it's time for food and bed.

Answer 8

Er, make that 16 x 6.28, you idiot Biffo. I think it's time for food and bed.