We have been given that a circle of a certain radius has an area which is numerically 5 times the value of the circumference. We are asked to find the radius of the circle.
We know that area of circle with a radius of r units is
.
We know that circumference of a circle is
.
5 times the value of circumference would be
.
Now we will equate 5 times circumference with area as:

Let us solve for r.



Therefore, the radius of the circle would be 10 units.
We know the number of faces and vertices of the solid and we have to calculate the number of edges.We have : F = 16 and V = 14.The formula is:F - E + V = 216 - E + 14 = 216 + 14 - 2 = EE = 30 - 2E = 28Answer: The solid has 28 edges.
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Answer:
Answer is C
Step-by-step explanation:
Answer:
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Step-by-step explanation: