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3 years ago

15

There are 26.2 miles in a marathon. There are approximately 8 kilometers in 5 miles. What is the best approximation of the numbe

r of kilometers in a marathon?
Question 5 options:

79 km

26 km

42 km

16 km

2 answers:

Roman55 [17]3 years ago

6 0

The best approximation will be 42km. For the exact, will be 42.16 km.

torisob [31]3 years ago

3 0

Answer:

42 km

Step-by-step explanation:

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3 years ago

A cylinder has volume 78 cm3 . What is the volume of a cone with the same radius and height? A 26 cm3 B 39 cm3 C 156 cm3 D 234 c

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Answer:

Option A - $26 \mathrm{cm}^{3}$

Step-by-step explanation:

Given: The volume of a cylinder = $78 \mathrm{cm}^{3}$

Let us substitute the volume of cylinder in the formula.

The formula for volume of a cone is $V=\frac{\pi r^{2} h}{3}$ (1)

The formula for volume of a cylinder is $V=\pi r^{2} h$ (2)

Substituting $V=78$ in equation (2), we get,

$\begin{array}{c}{V=\pi r^{2} h} \\{78=\pi r^{2} h}\end{array}$

Given that the cone has the same radius and height of that of the cylinder, let us substitute $78=\pi r^{2} h$ in equation (1)

$\begin{array}{l}{V=\frac{\pi r^{2} h}{3}} \\{V=\frac{78}{3}} \\{V=26}\end{array}$

Thus, the volume of a cone with the same radius and height of a cylinder is $26 \mathrm{cm}^{3}$ .

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3 years ago

Please help me ASAP!!! Will give brainlist:))

trasher [3.6K]

Answer:

I think it is D

Step-by-step explanation:

I am guessing because the stem should be 5 for sure but I am not so sure about my answer it leaves you with one of the choices with the number 5 in them.

I hoped I kinda helped if I didn't I am so sorry :(

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3 years ago