3 years ago

4 bags of cement do 18m^2, how many m^2 can be done with 7 bags

Mathematics

1 answer:

Lorico [155]3 years ago

8 0

36m^2 is the your answer hope it help

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The volume of a CONE-shaped hole is 75pi ft cubed. If the hole is 9 feet deep, what is the radius of the hole?

Arturiano [62]

Answer:

The radius of hole is 5 feet

Step-by-step explanation:

Depth of conical hole = 9 feet

Let the radius of hole be r

Volume of conical hole = $\frac{1}{3} \pi r^2 h$

So, Volume of conical hole = $\frac{1}{3} \pi \times r^2 \times 9$

We are given that volume of a CONE-shaped hole is 75pi ft cubed.

So, $\frac{1}{3} \pi \times r^2 \times 9=75 \pi$

$\frac{1}{3} \times r^2 \times 9=75$

$r^2=\frac{75 \times 3}{9}$

$r=\sqrt{\frac{75 \times 3}{9}}$

r=5

Hence The radius of hole is 5 feet

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3 years ago

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sveticcg [70]

Answer:

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Step-by-step explanation:

x is the number to be added to 0.7 to have a sum of 1.

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$x = 0.3$

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2 years ago

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The circumference of a circle is 18.84 inches. what is the circle's radius

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Answer:

Circumference : 18.84 inches

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