Whats the mathematical formula of a dodecahedron

Michele wanted to measure the height of her school's flagpole. She placed a mirror on the ground 48 feet from the flagpole, then walked backward until she was able to see the top of the pole in the mirror.

Molly is raising cows. She has a pasture for them that is 0.65 square miles in area. One dimension of the pasture is 0.4 miles long. What is the length of the other side of the pasture?

What is 1 1/5 times 1/3

The equation tan (55o) = 15/b can be used to find the length of AC. What is the length of AC? Round to the nearest tenth.

Area of the four walls of a hall is 2400 m^2. If the height and length of the room are in the ratio of 1:1 and the height and breadth in the ratio 1:1, then f ind the area of the f loor.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.