It’s been awhile since I’ve done a problem like this but I believe it’s solved as below:
The area of a circle is equal to πr2. That will tell you the entire area of the circle. Then you would need to divide that by 2 to get the area of the 180° arc.
So, the area of this circle is 153.94 square meters. If you divide that by 2 (since 180° is half of a circle) you would get 76.97 square meters.
45 degrees or pi/4 radians is the correct answer
Answer:
pt=%(whole)
x=1.6(65)
x=104.00
Step-by-step explanation:
or
<u>x</u> = <u>160</u>
65 100
160(65)=10400 divided by 100 equals 140
Answer:
15
Step-by-step explanation:
5+5+5=15
In geometry there are numerous formulas for specific shapes. However, you must know the basic concept to it so that you don't need to memorize a lot. For any given solid shape with equal bases, its volume is equal to the area of its base times its perpendicular height. But for pointed solids like a cone or a pyramid, the general formula of the volume is one-third of the product of the base area and the perpendicular height. For a cone, its base is circle, so:
V = `1/3 * πr² * h
The half of a diameter is the radius. So, r = d/2. Substituting the values
V = 1/3 * (3.14)(5/2)² * 7
V = 45.79 or 46 cm³
The answer is letter B.
