Cannonballs are stacked in a pyramid shape with a triangular base of 5 cannonballs on a side. how many cannonballs in all are in the stack

There will be 35 cannonballs in the stack.

Step-by-step explanation:

Cannonballs are stacked in a pyramid shape with a triangular base of 5 cannonballs on a side.

The top or first layer will have a single cannonball = 1

The second layer down is a triangle that will have cannonballs

The third layer will have cannonballs

The fourth layer will have cannonballs

The fifth or bottom layer will have cannonball

Adding those all these we get;

cannonballs

Hence, there are 35 cannon balls in the stack.

4400

step-by-step explanation: