Answer:
30 units
Step-by-step explanation:
The volume is given by ...
V = Bh
Filling in the given numbers, we can find the area of the base (B) to be ...
840 = B(14)
840/14 = B = 60
The area of the base is given by the formula ...
B = (1/2)Pa
where P is the perimeter and a is the apothem. Filling in the numbers we know, we have ...
60 = (1/2)P(4)
30 = P . . . . . . divide by 2
The perimeter of the base is 30 units.
