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2 years ago

Pam ordered a circular hot tub cover with a diameter of 80 inches. Find the area of the hot tub cover.

Mathematics

1 answer:

Nataliya [291]2 years ago

6 0

Answer:

5026.55in²

Step-by-step explanation:

Area = πr^2

radius (r) is half of the diameter, hence the radius is 40 inches

So after plugging that in, the equation should look like

Area = π(40)^2

A = 1600π ≈ 5026.55

The units for this is in² so just add that in the end

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3 years ago

The ratio of the side lengths of a quadrilateral is 3:3:5:8, and the perimeter is 380cm. What is the measure of the longest side

MariettaO [177]

Answer: The second option (160 cm)

Step-by-step explanation:

1. You can obtain the perimeter of a quadrilateral by adding the lenghts of the sides.

2. You know that the ratio of the side lengths is 3:3:5:8 and the perimeter is 380 centimeters.

3. Therefore, you can write the following expression, where x is an integer:

$3x+3x+5x+8x=380$

4. Solve for x:

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5. Therefore, the longest side is:

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3 years ago

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3(c-4)=4(c-6)<br> i don't know how to solve it, either

STatiana [176]

Answer:

c = 12

Step-by-step explanation:

3(c - 4) = 4(c - 6)

Use the distributive property on each side.

3c - 12 = 4c - 24

Now you need the terms with c on the left side and the numbers on the right side. Subtract 4c from both sides. Add 12 to both sides.

3c - 4c - 12 + 12 = 4c - 4c - 24 + 12

Combine like terms on each side.

-c = -12

Multiply both sides by -1.

c = 12

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3 years ago

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Pam ordered a circular hot tub cover with a diameter of 80 inches. Find the area of the hot tub cover.​

Pam ordered a circular hot tub cover with a diameter of 80 inches. Find the area of the hot tub cover.