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3 years ago

Sean used candle molds, as shown below, to make candles that were perfect cylinders and spheres:

1 answer:

4 0

56.52 in^3

V(cylinder) = pi * r^2 * h
V = pi * 3^2 ^ 6
V = pi * 9 * 6
V = 54pi

V(sphere) = (4/3) * pi * r^3
V = (4/3) * pi * 3^3
V = (4/3) * pi * 27
V = 36pi

54pi - 36pi = 18 pi
18 * 3.14 = 56.52

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vladimir2022 [97]

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Rate of simple interest per annum = 1.3%

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We know that :

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In this case :

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Which means :

The simple interest she will earn in 4 years :

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Thus, the amount she will gain after 4 years = $526

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We know that :

$\tt \: \color{hotpink}percentage \: of \: change\color{plum} = \frac{change}{original \: price} \times 100$

Which means :

Percentage of change in her savings account :

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2 years ago

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