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AfilCa [17]
3 years ago
10

How do you estimate an area?

Mathematics
2 answers:
jeka943 years ago
8 0
Put the numbers into a way that you can easily answer in your head. 47*63 40*70
adell [148]3 years ago
4 0
You calculate an answer by multiplying each side by each other. hope this helps.
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The cylinder shown has a lateral surface area of about 80 square inches. Which answer is closest to the height of the cylinder?
Radda [10]

Hello!

The cylinder shown has a lateral surface area of about 80 square inches. Which answer is closest to the height of the cylinder? Use 3.14 to approximate pi.

We have the following data:

Al (lateral surface area) = 80 in²

R (ratio) = 4 in

h (height) = ? (in inches)

Adopt : π ≈ 3.14

We apply the data to the formula, we have:

A_l = 2*\pi*R*h

80 = 2*3.14*4*h

80 = 25.12\:h

25.12\:h = 80

h = \dfrac{80}{25.12}

h = 3.18 \to \boxed{\boxed{h \approx 3.2\:in}}\:\:\:\:\:\:\bf\green{\checkmark}

Answer:

≈ 3.2 inches

________________________

\bf\green{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

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Your answer would be 3 and 1/8
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Answer:

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a ratio of science books to art books is 2:5. 20 % of the books were unsold and 2240 were sold. total amount of each book?
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