Answer:
Length of arc of a circle is given by:
.....[1]
where
L is the length of an arc
r is the radius of the circle.
As per the statement:
Diameter of the circle(D) = 6 inches.
we know that:
D =2r
6 = 2r
Divide both sides by 2 we get;
3 = r
or
r = 3 inches
We have to find the long arc arc subtended by an angle measuring 70°.
Substitute the value of r = 3 inches and in [1] we have;
Simplify:
L = 210 inches
Therefore, 210 inches long is the arc subtended by an angle measuring 70 degree.
Answer:
1533.88261311522
Step-by-step explanation:
<em>Let r be the radius of the (base/circle)</em>
<em>and L be the slant height of the cone</em>
<em>Formula ………………………………………………………………………………………………………</em>
The surface area of a cone = the (curved/lateral) surface area + the base
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L = BC = 36