# math

posted by =)

The circumference of a circle varies directly from its diameter. If the circumference of the circle having a diameter of 7cm is 7 cm, what is the circumferences of the circle whose diameter is 10cm? 18cm? 20cm?
a. Write a mathematical statement that relate two quantities involved in the problem
b. What is the constant of variation? Formulate the mathematical equation
c. Construct a table of values from the relation

1. PsyDAG

C = πd

I don't see how the value for the circumference and diameter could both be 7. Do you have a typo?

## Similar Questions

1. ### math

what is the diameter of a circle whose circomfrence is about 15.7 cm. divide the circumference by PI Divide the circumference by pi = 3.1416 to get the diameter
2. ### math

how do you find the diameter of a circle if you don't have the radius?
3. ### math

I'm asked to find the circumference of a circle to the nearest tenth and the area of the same circle to the nearest hundredth. The circle has a diameter of 30 and a radius of 15. I got a circumference of 94.2 and an area of 188.48cm2 …
4. ### Algebra

The circumference,y, of a circle varies directly with the diameter,x, of the circle. Write an equation if y=44cm when x=14cm.
5. ### Math

23.What is the approximate circumference of a circle with a radius of 6 cmA.12cm B.18cm C.24cm D.36cm D 24.What is the length of the diameter of a circle with a 15 radius A.5 B.15 C.30 D.45 C
6. ### Math

Jason drew two circles. the diameter of the larger circle is twice the diameter of the smaller circle. What is the ratio of the circumference of the smaller circle to the circumference of the larger circle?
7. ### summer math hw

one circle has a diameter of 10 inches. a second circle has a diameter that is twice the diameter of the first circle What is the ratio of the area of the smaller circle to the larger circle
8. ### Algebra

The circumference of a circle is found by the formula C=pi(d) where d is the diameter of the circle. Does circumference vary directly as diameter?
9. ### Math

The circumference of a circle varies directly from its diameter. If the circumference of the circle having a diameter of 7cm is 7 cm, what is the circumferences of the circle whose diameter is 10cm?
10. ### math

A segment with endpoints C(-3, 3)and D(7, 3) is the diameter of a circle. a. What is the center of the circle?

More Similar Questions