Question

Round to nearest tenth

Answer 1

Answer:

About 24.1 mm²

Step-by-step explanation:

The surface area of a cylinder is the area of the top + base + side.

That can be re written as SA = 2(πr²) + 2πr*h (Area of top + base are the same, and the area of the side is the circumference of the circles*height).

Plugging int he numbers we have, we get:

SA = 2π*(1.2)² + 2π1.2*2.

Simplify: 2π*1.44 + 2π*2.4 --> 2.88π + 4.8π --> 7.68π mm² ≈ 24.1 mm²

Answer 2

24.13 mm^2

$2\pi(r)(h) + 2\pi( {r}^{2} )$