A pencil box, in the shape of a rectangular prism measures 16 cm by 12 cm by 8 cm. Find the length of the longest pencil that would fit inside the box.A pencil box, in the shape of a rectangular prism measures 16 cm by 12 cm by 8 cm. Find the length of the longest pencil that would fit inside the box.
a. 20 cm
b. 18 cm
c. 17 cm
d. 15 cm