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Nana76 [90]
2 years ago
15

Nancy is replacing the mat on her trampoline. The circular mat has a diameter of 18 feet. what is the area of the trampoline mat

to the nearest square foot?
Someone please help me <3 :( :)
Mathematics
1 answer:
hjlf2 years ago
7 0
Answer : 254 ft sq

A = pi x r^2

A = 3.14 x 81
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Nutka1998 [239]

I'm assuming you're looking to find the expanded form of the number?

This number is in scientific notation. The easiest way to convert it to a normal number is to move the decimal place 14 to the right. I've attached a picture showing how to do this. You should get 630,000,000,000,000

There's a faster way to do this - notice that you need to move the decimal 14 to the right, and there's one number already after the decimal place. Therefore, 13 places will be filled with zeros. So, just write out 63 and add 13 zeros.

For more general help on scientific notation, check out these videos: https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-scientific-notation/v/scientific-notation-old

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3 years ago
A leak in a water tank causes the water level to decrease by 3.6×10−2 millimeters each second. About how many millimeters does t
frutty [35]
The correct answer is 6.5 x 10^2.

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What is the slope for 4y-2x=8
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rjkz [21]

Answer:

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Surface area of the polyhedron = 12 + 24 + 30 + 18 = 84 cm²

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