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fantasticratz2
30.07.2019 •
Mathematics
Ms.jones has a decorative pyramid that sits on her fireplace mantle .the base is an equilateral triangle with an area of 6 square inches. the height of the pyramid is 15 inches. what is the volume?
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Ответ:
.. V = (1/3)Bh
Fill in the given values and do the arithmetic.
.. V = (1/3)(6 in^2)*(15 in)
.. V = 30 in^3
The volume is 30 cubic inches.
Ответ:
total distance need to cover by all runners in a relay race = 1/2 km.
fraction that each runner on a team will run = 1/4th of the total distnace.
total distance given is 1/2 km.
therefore, each runner on a team will run 1/4th of the total distnace = 1/4 of 1/2km.
1/4 of 1/2km can be expressed as![(\frac{1}{4} \times \frac{1}{2})km](/tex.php?f=(\frac{1}{4} \times \frac{1}{2})km)
on simplifying above expression
therefore, each runner on a team will run = 1/8 km.
number of runners required to cover all distance = total distance ÷ distnace covered by each runner in the team.
=
÷ ![\frac{1}{8}](/tex.php?f=\frac{1}{8})
now, we will convert division sign into multiplication and flip right side fraction 1/8.
=![\frac{1 \times8}{2\times1}](/tex.php?f=\frac{1 \times8}{2\times1})
=![\frac{8}{2}](/tex.php?f=\frac{8}{2})
dividing 8 by 2, we get 4
therefore, number of runners required to cover all distance = 4 runners.