Question

1. write the surface area formulas for, then solve the surface areas of the following shapes

first shape (cone):
formula:

second shape (circle?):
4 m
formula:

third shape (rectangular prism?):
6 m, 6 m, 3 m, 6 m, 6 m
formula:

fourth shape (trapezoidal prism?):
7 m, 3 m, 5 m, 4 m
formula:

fifth shape (cylinder):
13 m, 20 m
formula:

sixth shape (pyramid):
8.7 ft, 7 ft, 7 ft
formula:

Explanation:

Answer:

1. Formula: $SA = \pi r^2 + \pi rl$; Surface Area: $1,350.16 \text{ in}^2$
2. Formula: $SA = 4\pi r^2$; Surface Area: $201.06 \text{ m}^2$
3. Formula: $SA = 2(lw + lh + wh)$; Surface Area: $144 \text{ m}^2$
4. Formula: $SA = (b_1 + b_2)h + L(b_1 + b_2 + s_1 + s_2)$; Surface Area: $110 \text{ m}^2$
5. Formula: $SA = 2\pi r^2 + 2\pi rh$; Surface Area: $1,445.13 \text{ m}^2$
6. Formula: $SA = B + \frac{1}{2}Pl$; Surface Area: $170.8 \text{ ft}^2$