Question

Question 2 help me please

Answer 1

Answer:

90π in²

Step-by-step explanation:

Surface area of cylinder:

  r = 3 in

  h = 10 in

     $\sf \boxed{\text{\bf Surface area of cylinder = \pi r^2h }}$

                                                   $= \pi 3*3*10\\\\= 90 \pi \ in^2$

Answer 2

✭ Explanation -:

In this question it is given that the radius of a cylinder is 3 inches. The height of the cylinder is 10 inches. We are asked to calculate the surface area of the cylinder in terms of π .

Radius = 3 inches

Height = 10 inches

We know,

$\star \: \small \boxed{\rm{ Surface \: area \: of \: a \: cylinder = πr²h}}$

Substituting the values we get

$\small\sf{ Surface \: area \: of \: a \: cylinder = π × 3² × 10}$

$\small\rm{ Surface \: area \: of \: a \: cylinder = π × 3 \times 3 × 10}$

$\small\rm Surface \: area \: of \: a \: cylinder = π × 90$

$\small\sf{ Surface \: area \: of \: a \: cylinder = \bf{90 π \: inches²}}$