A brick with dimensions 20 cm, 10 cm, and 5 cm weighs 1.2 kg. A second brick of the same material has dimensions 25 cm, 15 cm, and 4 cm. Find its weight.
What is 1.8 kg
100
A solid metal cylinder with radius 6 cm and height 18 cm is melted down and recast as a solid cone with radius 9 cm. Find the cone's height.
What is 24
100
A silo has a diameter of 10 meters and a the cylinder part has a height of 20 meters. The top of the cylinder is capped with a hemisphere. It takes two cans of paint to paint the hemisphere. How many more cans do you need to paint the rest of the silo(but not the bottom circle)?
What is 8 cans
100
A rectangle has area 392 square meters. Its length is twice its width. What is its length and width?
What is 14 and 28
100
A Ferris wheel has diameter 42 feet. How far will a rider travel during a 4 minute ride if the wheel rotates every 20 seconds? use pi=3.14
What is 1583 feet
200
A regular octagonal pyramid has base edge 3 meters and a lateral area of 60 square meters. Find its slant height.
What is 5
200
The total area of a cylinder is 40pi. The height is 8. Find the length of the radius.
What is 2
200
Two similar pyramids have heights 6 cm and 10 cm. The smaller ball weighs 4 kg. What does the larger ball weigh?
What is 18.5 kg
200
Find the area of the trapezoid on the board.
What is 87.8
200
Draw an equilateral triangle then draw its inscribed circle and circumscribed circle. Find the ration of the areas of these two circles.
What is 1:4
300
A piece of wire 6 feet long is cut into two pieces at a random point. What is the probability that both pieces of wire will be at least 1 foot long?