The pyramid given above has four faces. Each of which are in triangular shape. The area of the triangle is calculated through the equation,
A = bh / 2
where A is area, b is base and h is the height.
Substituting the known values,
A = (4 inch)(9 inch) / 2 = 18 in²
Multiplying this area by 4 will give us an answer of 72 in².
Then, we also calculate for the area of the square base.
A = s²
where s is the measure of each side of the square.
A = (4 in)² = 16 in²
Finally, we add up the calculated areas.
surface area = 72 in² + 16 in²
<em>surface area = 88 in²</em>
Hence, the surface area of the figure is equal to 88 in².
15t because 5 times 3 its 15
Answer:
see below
Step-by-step explanation:
Volume = Length x width x height
a) Box 1 V = 3x · x · 2x = 6x³
b) Box 2 V = 2x · 4x · x = 8x³
c) Add the volumes 6x³ + 8x³= 14x³
d) plug 6 in for x
14(6³) = 3,024 units
