3 years ago

A technician charges $25 per hour plus $50

1 answer:

7 0

Use a variable to represent the number of hours the technician will work, plus the $50.

50+25x
This would be the expression used to find the amount of money the technician needs.

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Find the surface area of the cylinder. Round your answer to the nearest tenth.

kirill [66]

Given:

Height of cylinder = 12 cm

Diameter of cylinder = 6 cm

To find:

Surface area of the cylinder

Solution:

Radius = 6 ÷ 2 = 3 cm

Surface area formula:

$SA=2\pi r^2+2 \pi rh$

Substitute the given values.

$SA=2\times3.14 \times3^2+2\times3.14 \times3 \times12$

$=56.52+226.08$

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The surface area of the cylinder is 286.2 cm².

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