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3 years ago

For a school project, Sarah plans to build a scale model of an Egyptian pyramid. She will be using a scale of: 1 cm = 5 meters.

Mathematics

2 answers:

vovangra [49]3 years ago

8 0

B .28cm

Step-by-step explanation:

if 1cm=5m

then,140=×

1cm=5cm

cross multiply to get;

140÷5=28(cm)

=28cm

Vinvika [58]3 years ago

3 0

Answer:

Step-by-step explanation:

you divide 140 by 5 so 28 is the answer

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marshall27 [118]

Answer:

<h3><u>Cylinder</u></h3>

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Given:

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h = 18 cm

$\begin{aligned}\implies \sf V &= \sf \pi (6)^2(18)\\& = \sf 648 \pi \: cm^3\end{aligned}$

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Given:

x = 8 cm

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Volume of cylinder - volume of cube

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= 1532.75204 cm³

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As 1500 < 1532.75204, the volume of water poured into the container is smaller than the empty space available in the cylinder. Therefore, the water will <u>not</u> come over the top of the container.

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2 years ago

The circumference of ruby's old swimming pool is 47.1 feet. Her new swimming pool has a diameter of 21 feet. How much larger is

Alla [95]

The new pool is 18.84 feet larger in circumference than the old one.

<u>Explanation:</u>

Given:

Circumference of the pool = 47.1 feet

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radius, r = 21/2 feet

Circumference of the new pool = ?

We know:

Circumference = 2πr

where,

r is the radius

On substituting the value:

C = $2 X 3.14 X \frac{21}{2}$

C = 65.94 feet

The difference in circumference of the two pools = 65.94 - 47.1 feet

= 18.84 feet

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Answer:

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Step-by-step explanation:

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