Hey ya'll, I really need help with some Math.
1. The diameter of a circle measures 10mm . What is the circumference of the circle?
2.The circumference of a circular painting is 62.8 feet. What is the radius of the painting? Use 3.14 for and do not round your answer.
C=(3.14)x(Diameter) and
for the second one
C=(3.14)x(D) but when you find D you must divide it by 2 to get the radius (because the diameter is all the way across the circle and the radius starts at the center and goes to the outer edge (half way across the circle)).
Sure, I can help with your math questions!
1. To find the circumference of a circle, you can use the formula C = πd, where C represents the circumference and d represents the diameter of the circle.
In this case, the diameter of the circle measures 10mm. So, you can substitute the value of d into the formula:
C = π(10mm)
To find the circumference, you need to multiply 10mm by π. The value of π is approximately 3.14. Therefore, the calculation would be:
C = 3.14 * 10mm
Multiply 3.14 by 10 to get the circumference:
C ≈ 31.4mm
So, the circumference of the circle is approximately 31.4mm.
2. To find the radius of a circle when you are given the circumference, you can use the formula C = 2πr, where C represents the circumference and r represents the radius of the circle.
In this case, the circumference of the circular painting is 62.8 feet. You can substitute this value into the formula:
62.8 feet = 2πr
Divide both sides of the equation by 2π in order to isolate the value of r:
r = 62.8 feet / (2π)
To get the value of the radius, divide 62.8 feet by 2π. Remember to keep π as 3.14 for this calculation:
r ≈ 62.8 feet / (2 * 3.14)
Simplify the expression to find the value of r:
r ≈ 62.8 feet / 6.28
Divide 62.8 feet by 6.28 to get the radius:
r ≈ 10 feet
Therefore, the radius of the circular painting is approximately 10 feet.