Q. The volume of a right cone is 36π units 3. If its circumference measures 6π units, find its height.Answer: units
Identify Formula and Values: Identify the formula for the volume of a cone and the given values.The volume of a cone is given by the formula V=31πr2h, where V is the volume, r is the radius, and h is the height. We are given the volume V=36π units3.
Identify Circumference Formula: Identify the formula for the circumference of a circle and the given value.The circumference of a circle is given by the formula C=2⋅π⋅r, where C is the circumference and r is the radius. We are given the circumference C=6π units.
Calculate Radius from Circumference: Calculate the radius of the base of the cone using the circumference.Using the formula C=2πr, we can solve for r:6π=2πrDivide both sides by 2π:r=2π6πr=3 units
Substitute Radius into Volume Formula: Substitute the radius into the volume formula and solve for the height.We have V=31πr2h and r=3 units. Substitute these values into the volume formula:36π=31π(3)2h
Simplify Equation and Solve: Simplify the equation and solve for h.36π=(31)×π×9×hMultiply both sides by 3 to get rid of the fraction:108π=π×9×hDivide both sides by π×9:h=(π×9108π)h=12 units