32: The trapezoids are similar. The area of the smaller trapezoid is 711 m².

Question

Find the area of the larger trapezoid to the nearest whole number.
The one trapezoid has a base of 27 m and the larger one has a base of 39 m.

39: Find the circumference. Leave your answer in terms of π.
It is a circle with a radius of 18 inches.
(multiple choice)
A. 36π in.
B. 324π in.
C. 18π in.
D. 54π in.

Answer 1

Since the shapes are similar, their areas are proportional to the square of their corresponding sides, so

area-of-larger/711 = 39^2/27^2
solve

For the second one, surely you know that the perimeter of a circle is 2πr.