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Zielflug [23.3K]
3 years ago
12

The standard trampoline has a circumference of about 41 feet. When Jenna's dad lays with his feet at the center of the trampolin

e, the top of his head aligns with the outer edge. About how tall is Jenna's dad
Mathematics
1 answer:
Ksivusya [100]3 years ago
8 0
To find the height of Jenna's dad, you will use the formula for circumference of a circle to solve for the radius.

C = 2 x pi x r
41 = 2 x 3.14 x r
<u>41 </u>= <u>6.28 x r</u>
6.28  6.28
r = 6.529

Jenna's dad is approximately 6 foot 6 inches tall (0.5 = 6 inches).

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2 years ago
You have 8 gallons of lemonade to sell. You use cone-shaped cups that are 9 centimeters in diameter and 12 centimeters tall. Eac
andre [41]

You will need 119 cups to sell all of the lemonade.

Step-by-step explanation:

Given,

Diameter of cups = 9 cm

Radius of cup = \frac{Diameter}{2}=\frac{9}{2}=4.5\ cm

Height of cups = 12 cm

We will find volume of cup.

Volume = \frac{1}{3}\pi r^2h\\

Putting all the values

Volume=\frac{1}{3}(3.14)(4.5)^2(12)\\\\Volume=\frac{1}{3}(3.14)(20.25)(12)\\\\Volume= \frac{763.02}{3}\\\\Volume= 254.34\ cm^3

Therefore;

Each cup can hold 254.34 cubed centimeter of lemonade.

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Let,

x = Number of cups

Volume of lemonade in one cup * Number of cups = Volume of 8 gallons

254.34x=30280

Dividing both sides by 254.34

\frac{254.34x}{254.34}=\frac{30280}{254.34}\\x=119.05

Rounding off to nearest whole number

x = 119

You will need 119 cups to sell all of the lemonade.

Keywords: volume, division

Learn more about volume at:

  • brainly.com/question/1836777
  • brainly.com/question/1993757

#LearnwithBrainly

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