Question

Surface Area of a Cylinder=2πr2+2πrh.

Find the exact surface area of a cylinder with diameter 8 cm and height 28 cm

Answer 1

2pi(4)^2= 100.5
2pi(4)(28)= 703.7
703.7+100.5= 804.2
The answer is 804.2cm^2

Answer 2

The answer is 256pi if you have a calculator, and it says to put it in 3.14 for pi, do the same steps I show here, but instead of pi, you would put 3.14. But I hope this helps you