Question

.

Answer 1

area of a square hope you know formula of this ,yes ?

Answer 2

side time side

Answer 3

so this you can calcul now easy ,ok ?

Answer 4

volum of pyramid equal area of base time height divide 3

so you know area of base and the height of pyramid than you can calcul it easy

Answer 5

c. so than you see the slant height and the height of pyramid with a half part of median line of base formed a right triangle

so using here pythagora you can calcul easy the slant height of pyramid

Answer 6

I"d think you can find the "area of the base" since is a SQUARE base thus

Answer 7

so... what did you get for a)?

Answer 8

d. the surface area will be area of base assumed with 4 time area of a side

area of a side = 18 time the slant height divide 2

hope this will help you understanding easy