Hello!
To find cosine, use the formula cos = adjacent / hypotenuse.
According to angle B, adjacent of angle B is side A, and the hypotenuse is side c because the hypotenuse is always opposite the right angle.
Therefore, the cosine of angle B is a/c.
The volume of the pyramid would be 2406.16 cubic cm.
<h3>How to find the volume of a square-based right pyramid?</h3>
Supposing that:
The length of the sides of the square base of the pyramid has = b units
The height of the considered square-based pyramid = h units,
The pyramid below has a square base.
h = 24.4 cm
b = 17.2 cm
Then, its volume is given by:


Therefore, the volume of the pyramid would be 2406.16 cubic cm.
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<em>The Ordered pair of solution will be (x,y)=(2,3)</em>

<h3>Steps below⤵️</h3>
- Solve the second equation for y
- Substitute the given value of y into the first equation
- Solve the first equation for x
- Substitute the given value of x into the second equation
- Solve the equation for y
- The possible solution of the system is the ordered pair (x,y)
- And we are done solving!!~