In an arboretum the heights of five trees were 21 feet 31 feet 36 feet 28 feet and 26 feet. What would be the height of the sixth tree if the mean height of the six trees was 28 feet​

the least common denominator is 40

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5