Answer:
what is the question
Step-by-step explanation:
Answer:
50
Step-by-step explanation:
Volume of rectangular pyramid=(l*w*h)/3, so 150/3=50
DF = DE + EF
So,
DF = 47 + 3x +10
We know that DF = 9x - 39, so:
9x - 39 = 47 + 3x + 10
9x - 3x = 57 + 39
6x = 96
x = 16
EF = 3x + 10
EF = 3.16 + 10
EF = 48 + 10
EF = 58
It's fine :)
