Answer:
54.87 cm cubed
442.3475 or 442 cm cubed
226.08 or 226 units cubed
80 cm cubed
160 in cubed
314 m cubed
384 cm squared
126 cm squared
923.16 or 923 in squared
1123.12 or 1123 cm squared
44.57962667 or 45 cm cubed
Step-by-step explanation:
The volume of a square is V=a^3
If you plug in 3.8 for a you would get V≈54.87
The volume of a cylinder is V=π(r^2)h
If you plug in the given measures and solve you get 442.3475 or 442
Do the same for #3 and get 226.08 or 226
The volume of a right triangular prism is the (area of the base times it's height) divided by 3. You would get 8 x 5 =40 40 x 6 is 240 240/3 is 80
Do the same for #5 and get 160
Find area of base, circle, with A=pi times r squared and get 78.5. multiply by its height (12, solve for height with Pythagorean theorem) and get 924. Divide by three and get 314.
A square's area is base times height so it would be 64. a cube has 6 sides so do 64 times 6 and get 384.
Break down the prism into 6 rectangles. Find the area of each rectangle and add them up to get 126.
The formula for SA of a cylinder is A=2πrh+2πr^2
Plug in the given values and get 923.16 or 923
Do the same for #10 and get A≈1123.12 or 1123
The volume of a sphere is V=(4/3)πr^3
Plug in 2.2 for r and get 44.57962667 or 45
