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3 years ago

The volume of the pyramid shown is 70 m3.

Mathematics

2 answers:

Alexeev081 [22]3 years ago

5 0

Answer:

The height of the pyramid is 5m

Step-by-step explanation:

The volume of the pyramid shown is 70 m3.

A rectangular pyramid with a base of 7 meters by 6 meters and a height of h.

What is the height of the pyramid?

StartFraction 5 over 9 EndFraction meters

Five-thirds meters

5 m

980 m

Ne4ueva [31]3 years ago

3 0

Answer:

The height of the pyramid is 5m

Step-by-step explanation:

To calculate the heigth of a pyramid we have to use the following formula:

v = volume = 70 m³

w = width = 6 m

l = length = 7 m

h = height

v = (w * l * h) / 3

we replace the values that we know

70m³ = (6m * 7m * h) / 3

70m³ * 3 = 42m² * h

210m³ / 42m² = h

5m = h

The height of the pyramid is 5m

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Ella collects 50 bottles to recycle. Of the bottles she collects, 19 are plastic and the rest are glass.

nekit [7.7K]

QUESTION A

The total number of bottles Ella collected is
$50$

The number of bottles that are plastic is

$19$

The percentage of bottles that are plastic is

$= \frac{number \: of \: plastic \: bottles}{total \: number \: of \: bottes} \times 100\%$

$= \frac{19}{50} \times 100\%$

$= 19 \times 2\%$
$= 38\%$

Therefore 38% of the bottles are plastic.

QUESTION B

The total number of bottles that are glass is
$50 - 19 = 31$

The total number of bottles Ella collected is
$50$

The percentage of bottles that is glass is
$= \frac{number \: of \: glass \: bottles}{total \: number \: of \: bottles} \times 100\%$

$= \frac{31}{50} \times 100\%$

$= 31 \times 2\%$
$= 62\%$

Therefore 62% of the bottles are glass

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