~please help, thank you~

Mathematics

2 answers:

solong [7]3 years ago

6 0

The volume of a pyramid with hight and base is 1/3 the volume of a rectangleular prisim with the same height and base

also the volume of a cone is 1/3 the volume of a cylinder with same height and base so
just fun facts to know (helpful)

so volume of cylinder=1/3 times height tiimes pi times radius^2
subsitute
use pi=3.14
height=12
radius=6
volume=1/3 times 12 times 3.14 times 6^2
volume=4 times 3.14 times 36
volume=452.16 cubic meters
the naswer is the top left choice

ladessa [460]3 years ago

5 0

Volume=pi*(radius^2)*(height of cone/3) so in this case Volume= pi*6^2*(12/3). Simplify pi*36*4. Simplify again and you get Volume=452.16 cubic meters.

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Citrus2011 [14]

Hi, the attached image has your answer.

3 0

3 years ago

A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65m/s in 5 seconds what

artcher [175]

The acceleration is defined as the ratio between the change in velocity and the time elapsed to perform such a change.

These "changes" are indicated with the capital greek letter delta, $\Delta$ , and when you write $\Delta x$ you mean the difference between the finial and the inital values of the variable x:

$\Delta x = x_{\text{fin}} - x_{\text{init}}$

So, the acceleration is defined as

$a = \dfrac{\Delta v}{\Delta t} = \dfrac{v_{\text{fin}} - v_{\text{init}}}{t_{\text{fin}} - t_{\text{init}}}$

In this case, the initial velocity is 35, the final velocity is 65. Assuming we start the clock at the beginning of the observation, the inital time is 0 and the final time is 5. So, we have

$a = \dfrac{65-35}{5-0} = \dfrac{30}{5} = 6$ m/s^2