Answer: volume of cone = 14.2 ft³
Step-by-step explanation:
The formula for determining the volume of a cone is expressed as
Volume = 1/3πr²h
Where
h represents the height of the cone
r represents the radius of the cone
π is a constant whose value is 3.14
From the information given
Height = 2 feet
Diameter of circular base = 5.2 feet
Radius = diameter/2 = 5.2/2
Radius = 2.6 feet
Therefore,
Volume of cone = 1/3 × 3.14 × 2.6² × 2
Volume of cone = 14.2 ft³ to the nearest tenth of a cubic foot
Answer:
-54
Step-by-step explanation:
For this question, all you have to do it plug 4 in for x.
-6(4+5)
-6(9)
-54
The answer is 55<span>°. Hope this helps.</span>
We can see from the diagram that the length of the rectangle is 2 lots of the radius of one quarter circle. The width is made up of one radius, therefore the width is half of the length.
This means that the width of the rectangle is 9cm, and the radius of each quarter circle is 9cm.
To find the shaded area, we find the area of the rectangle and subtract from the areas of each circle, which are equal:
A = lw - 1/2(pi x r^2)
A = 9 x 18 - 1/2(81pi)
A = 162 - 81/2 pi
A = 34.8cm (3sf)
