Find the surface area of a cylinder with a base radius of 4 m and a height of 9 m.
Use the value 3.14 for π

326.56m^2

Step-by-step explanation:

The surface area of a cylinder is calculated by 2πrh+2πr2, where π is a constant, given as 3.14; h is the height, given as 9m and r is radius, given as 4m.

Therefore, rh = 4 x 9= 36m

while r^2 =4×4 = 16m

Slot the values into the formula:

2 (3.14). (36) + 2 (3.14) 16

= (6.28 x 36 )+( 6.28 x16)

=226.08 + 100.48

=326.56m^2

I hope this helps.

step-by-step explanation:

i believe that the answer is

b. y-1=-2(x-4)

hope this !