Interactive practice questions
The Louvre pyramid is a large glass and metal pyramid which serves as the entrance to the Louvre museum in Paris. It is a square pyramid with a perpendicular height of $22$22 m and a base length of $35$35 m.
If the surface of the pyramid (excluding the base) is entirely covered in glass, how many square metres of glass make up the structure?
Round your answer to the nearest square metre.
Some very famous right square pyramids are the Egyptian Pyramids. Pictured here is the Great Pyramid, which is approximately $139$139 m in height. It has a base length measuring $230$230 m, and its triangular faces each have a height of $216$216 m.
Find the surface area of the Great Pyramid. Do not include the base of the pyramid in your calculation.
The planet Saturn has a radius of $58232$58232 km, and planet Mercury has a radius of $2439.7$2439.7 km. How many times bigger is the surface area of Saturn than Mercury?
If two identical spherical balls with radii of $1.4$1.4 m fit exactly inside a cylinder, what is the surface area of the closed cylinder?
Round your answer to one decimal place.