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Effectus [21]
3 years ago
11

Math help please show work thanks

Mathematics
1 answer:
GalinKa [24]3 years ago
8 0

Problem 5

d = 29 = diameter

r = d/2 = 29/2 = 14.5 = radius

SA = surface area of sphere

SA = 4*pi*r^2

SA = 4*pi*(14.5)^2

SA = 841pi

SA = 841*3.14

SA = 2,640.74 square inches

To convert from square inches to square feet, we divide by 144. This is because 12^2 = 144.

2,640.74 square inches = (2,640.74)/144 = 18.3 sq ft

<h3>Answer: 18.3 square feet (approximate)</h3>

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

Problem 6

d = 10.7 = diameter

r = d/2 = 10.7/2 = 5.35 = radius

L = 22.3 = slant height

SA = surface area of the cone

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

SA = pi*(5.35)^2 + pi*5.35*22.3

SA = 147.9275pi

SA = 147.9275*3.14

SA = 464.49235

<h3>Answer:  464.49235 square cm (approximate)</h3>
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Given, a marble factory makes single marbles and then puts them in boxes of 10, cartons of 100 and crates of 1000.

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We can write 21,650 in the form of 1000 as, (21)(1000) = 21000

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3 years ago
A souvenir of the Eiffel Tower is scaled at 1/80 inch to 1 foot. If the total height of the tower is 1,069 feet, the approximate
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Answer: Option C

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I thinks it’s B but not 100%
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irina1246 [14]

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