Multiplying fractions, unlike adding them, does not require you to find a common denominator. Simply multiply the numerator and denominator and simplify if you have to. In this case, it's .
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A negative multiplied by a positive is still negative, so this becomes .
Answer:
Step-by-step explanation:
We are given that the diameter of the sand-shaped cone is 14 inches, and the height is 15 inches.
The volume for a cone is given by:
Where r is the radius and h is the height.
Since the diameter is 14, the radius is 7.
And we are given that the height is 15.
Therefore, the volume will be:
Use a calculator:
The volume of the cone is approximately 769.7 cubic inches.
Answer:
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Step-by-step explanation:
We know that
AE*EC=DE*EB-----------> <span>String theorem
AC=8 in----------> AE=AC/2----------> AE=4 in
EC=AE-----------> EC=4 in
BE=2.5 in
DE=?
DE=(AE*EC)/EB----------> DE=</span>(4*4)/2.5---------> DE=6.4 in
<span>
then
diameter=DE+EB--------> 6.4+2.5=8.9 in
the answer is
the diameter is 8.9 in
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