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BabaBlast [244]
3 years ago
5

Mary wants to figure out how much space she has in her pencil holder. What is the volume, in cubic centimeters, of her pencil ho

lder? Use 3.14 for TT
Formula: V = TTr2h

Mathematics
1 answer:
satela [25.4K]3 years ago
6 0
------------------------------------------
Formula
------------------------------------------
Volume of cylinder = πr²h

------------------------------------------
Find Volume
------------------------------------------
Volume = πr²h
Volume = (3.14)(4)²(9)
Volume = 452.16 cm³

------------------------------------------
Answer: 452.16 cm³
------------------------------------------
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A backyard pool has a concrete walkway around it that is 5' wide on all sides the total area of the pool and the walkway is 950'
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The dimensions of the pool would give a quadratic equation x² + 28x - 770 = 0

<h3>How to determine the dimension</h3>

For the pool, we have that;

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The pool alongside the walkway gives;

Width = x + 5 + 5 = (x + 10) feet

Length = x + 8 + 5 + 5 = (x + 18) feet

Total area of the pool with walkway = 950 square feet

Note that formula for area is given as

Area = length * width = 950

Equate the length and width

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Using the  FOIL method, we have;

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collect like terms

x² + 28x - 770 = 0

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Learn more about area of a rectangle here:

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