The base of right prism is a trapezium whose parallel sides are 11 cm and 15 cm and the distance between them is 9 cm. If the volume of the prism is 1731.6 cm³, then the height (in cm) of the prism will be ?
Show answer & explanation
Correct answer: C
Explanation
The correct anwer is option 3 ie 14.8
Base area = (1/2) × 26 × 9
= 13 × 9 = 117
V = base height
V = 117 × h
1731.6 / 117 = h
h = 14.8 cm