Answer: h = 12mm
Step-by-step explanation:
The volume of a pyramid is given as :
V =
lwh
Therefore:
324 =
lwh
324 x 3 = 9 x 9 x h
Therefore:
h = 972/81
h = 12mm
Answer:
your equation is wrong!! the answer is 
Step-by-step explanation:
the correct order of the equation is:

first, solve in the parentheses from left to right:

If we have 2 negative signs then we will change them to positive :

now we have an equation with parentheses, we will multiply
because the parentheses go first.

Wish I could help! But maybe one day I can and hopefully there’s someone on here that and assist you!
The third one is the answer
(1,5)
good luck