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13 votes
13 votes
Find the area of a semicircle with the height of 33 ft in the diameter of 66 ft

User Vozaldi
by
2.7k points

2 Answers

10 votes
10 votes

Answer:

Area=

πr2

2

Explanation:

3.14159⋅(33)2

2

=1710.5958

User Nazish
by
2.7k points
18 votes
18 votes

Answer:

Explanation:

Comment

The radius is 33 feet. The height is really a radius. The diameter consists of 2*r

r = diameter / 2

diameter = 66 feet

r = 66 /2 = 33

So you have 2 ways of finding the radius.

Solution

Area of a full circle = pi r^2

Area of a full circle = pi * 33^2

Area of a full circle = 1089 pi

Area of a semicircle = area of a full circle / 2

Area of a semicircle = 1089 * pi /2

Area of a semicircle = 544.5 * pi

Answer

Exact answer in terms of pi is 544.5 * pi

Approximate answer using 3.14 for pi = 3.14*544.5 = 1709.73

User JohnZaj
by
3.3k points