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inessss [21]
3 years ago
10

The area of circle Z is 64 ft2.

Mathematics
2 answers:
Maru [420]3 years ago
8 0

Answer:

r=4.51 ft

Step-by-step explanation:

Area of a circle is given by

A=\pi r^{2} where A is area and r is the radius. Making r the subject of the above formula then

r=\sqrt {\frac {A}{\pi}}

Substituting A with 64 then

r=\sqrt {\frac {64}{\pi}}\approx 4.51 ft

posledela3 years ago
3 0

Answer:

its 8

Step-by-step explanation:

i got it right

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PLS HELP! I NEED TO FIND THE SURFACE AREA OF THIS CYLINDER!
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Exact Surface Area = 378pi

Approximate Surface Area = 1186.92

The approximate surface area uses pi = 3.14

The units are cm^2 or "square cm".

=========================================================

Work Shown:

SA = surface area of cylinder

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*pi*7^2 + 2*pi*7*20

SA = 2*pi*49 + 2*pi*140

SA = 2*49*pi + 2*140*pi

SA = 98pi + 280pi

SA = 378pi ..... exact surface area

SA = 378*3.14

SA = 1186.92 ..... approximate surface area

----------

Side note: The diameter 14 cuts in half to get the radius r = 7

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Answer:

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Step-by-step explanation:

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Please find attached the graph used in answering this question. To learn more about subtraction, please check: brainly.com/question/854115

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