The first answer is correct
<h2>
Answer:</h2>
<u>24.</u>
<h2>
Step-by-step explanation:</h2>
<h3>1. Write the expression.</h3>
<h3>2. Substitute the variables by the respective given value using <u>parenthesis</u>.</h3>
<h3>3. Simplify the expression by applying the hierarchy or mathematical operations.</h3>
<em>a) Solve parenthesis.</em>
<em>b) Solve the exponent.</em>
<em>c) Divide.</em>
<em>d) Subtract.</em>
A pyramid always have a number of slant triangles equal to the number of the sides of the base.
This means that a pyramid always have the number of face which is one more than the number of sides of the base.
Therefore, given that a pyramid has n number of sides of the base, the expression for the number of faces of the pyramid is given by
number of faces = n + 1.
