Question

The parthenon has an 8 x 17 colonnade of columns around the periphery. What is the total number of columns around the outer perimeter?

Answer 1

46

Explanation:

Adding the given numbers of columns on each side counts each corner column twice. Therefore, we must subtract 4 corner columns from the total.

2(8+17) -4

= 2(25) -4

= 50 -4

= 46