3 years ago

the diameter of a cylinder is 8 inches. the height is 12 inches. what is the surface area of the cylinder?

Mathematics

1 answer:

butalik [34]3 years ago

3 0

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A rectangle has an area of 8 square centimmetres and a perimeter of 12 cm. What are the width and breath?

vlada-n [284]

Let the Length be L and the Width be W

The area is 8 cm²
LW = 8

The perimeter is 12
2(L + W) = 12
L + W = 6

Solve L and W:
LW = 8 --------------- (1)
L + W = 6------------ (2)

Equation (2):
L + W = 6
L = 6 - W -------------- Sub into (1)
(6 - W) W = 8
6W - W² = 8
W² - 6W + 8 =0
(W -2 )(W - 4) = 0
W = 2 or 4

When W =2, L = 6 - 2 = 4
When W = 4, L = 6 - 4 = 2

Answer: The Width is 2 cm and the Length is 4 cm

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3 years ago

What is 87 less than the quotient of an unknown number and 43 is -75.

Afina-wow [57]

X/43 - 87= -75

the unknown number = 516

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3 years ago

Help pls me with this question!

xeze [42]

Answer:

The last option

Step-by-step explanation: