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fgiga [73]
2 years ago
10

the circumference, or perimeter, of a circle can be found by multiplying its diameter by 3.14. what is the circumference of a ci

rcle that has a diameter of 1/2 inch? Express your answer as a decimal
Mathematics
1 answer:
Dahasolnce [82]2 years ago
8 0

Answer:

4.71238898

Step-by-step explanation:

The formula used to calculate circle circumference is:

C = π · ø

Enter the diameter of a circle. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart

This is the total length of the edge around the circle with the specified diameter, if it was straightened out.

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A right cone has radius 5 ft and slant height 9 ft. The radius and slant height are both multiplied by 1/2. Which of the followi
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Answer:

101.07ft^2

Step-by-step explanation:

Given data

radius= 5ft

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When the radius and height are both multiplied by 1/2

radius= 5/2ft = 2.5ft

height= 9/2 ft= 4.5ft

The expression for the surface area of the cone is

A=πr(r+√h^2+r^2)

Substiute

A= 3.142*2.5(2.5√4.5^2+2.5^2)

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A= 7.855(2.5√26.5)

A= 7.855(2.5*5.147)

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Hence the surface area is 101.07ft^2

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2 years ago
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