Answer:
The correct answer is A) 7, 10 and 16 inches.
Step-by-step explanation:
The rest of these are Pythagorean triples, which most teachers have you memorize. However, you can also check them using the Pythagorean Theorem.
a^2 + b^2 = c^2
7^2 + 10^2 = 16^2
49 + 100 = 256
149 = 256
Since this is not correct, this is not a right triangle.
Given
lateral area = 2 X pi X r X H
= 2 x 3.14 x 5 x 9 = 282.6
d^2/4 = 132.7