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nirvana33 [79]
3 years ago
15

The radius of Earth is about 3960 miles. The radius of the moon is about 1080 miles. a. Find the surface area of Earth and the m

oon. Round your answer to the nearest tenth of a million. The surface area of the Earth is about million square miles and the surface area of the Moon is about million square miles. b. Compare the surface areas of Earth and the moon. Round your answer to the nearest tenth. The surface area of the Earth is about times greater than the surface area of the moon. c. About 70% of the surface of Earth is water. How many square miles of water are on Earth’s surface? Round your answer to the nearest tenth of a million. There are about million square miles of water on the Earth's surface.
Mathematics
1 answer:
Molodets [167]3 years ago
4 0

A) The formula for surface area of a sphere is A = 4*PI*r^2

using 3.14 for PI:

Surface area for Earth = 4 * 3.14 x 3960^2 = 196,960,896 miles^2

Surface area of the moon: 4 * 3.14 * 1080^2 = 14,649,984 miles^2

B)Divide the Surface of the Earth by the moon:

196,960,896 / 14,649,984 = 13.44

The Earths surface is 13.4 times larger than the moon.

C) Multiply the surface of the Earth by 70%:

196,960,896 * 0.70 = 137,872,627.2 million square miles of water.

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1 ) first offer
total payments
375.76×12×4
=18,036.48
Interest paid
18,036.48−16,000
=2,036.48
Second offer
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390.61×12×4
=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
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277.09×12
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Interest paid
3,325.08−3,000
=325.08
Credit card 2
Total payments
152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
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6 0
3 years ago
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Svetach [21]

Answer:it the 3rd one

Step-by-step explanation:

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8 0
3 years ago
A play was attended by 984 persons. 75% of them were adults how many adults attend
Ierofanga [76]

Answer:

738

Step-by-step explanation:

984 ÷ 100 = 9.84

9.84 × 75 = 738

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5 0
3 years ago
Of the students who eat in a certain cafeteria, each student either likes or dislikes lima beans and each student either likes o
spayn [35]

Answer: There are 32 students who like brussels sprouts but dislike beans.

Step-by-step explanation:

Since we have given that

Number of students eat in the cafeteria = 120

Fraction dislike lime beans = \dfrac{2}{3}

Fraction who dislike lime beans and brussles sprouts both = \dfrac{2}{3}\times \dfrac{3}{5}

Fraction who dislikes lime beans but not brussles is given by

\dfrac{2}{3}(1-\dfrac{3}{5})\\\\=\dfrac{2}{3}\times \dfrac{2}{5}\\\\=\dfrac{4}{15}

So, Number of students who like brussels sprouts but dislike lima beans is given by

\dfrac{4}{15}\times 120\\\\=32

Hence, there are 32 students who like brussels sprouts but dislike beans.

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3 years ago
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Answer:

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