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Mathematics 18 Online
OpenStudy (alina123):

linda made a circular table cloth with a diameter of 50 inches. she wants to place a decorative border around the edge. A. How can linda find the length of border decoration she needs to buy? B. Calculate the length of the border to the nearest inch.

OpenStudy (alina123):

Do you need to find the circumference?

OpenStudy (ranga):

Yes!

OpenStudy (alina123):

Oh then I know this but I have another question I don't know whether it is circumference or are

OpenStudy (ranga):

Go ahead and post it.

OpenStudy (alina123):

If the tire on the wheel is 6 centimeters thick, what is the circumference of the wheel. Is the answer 18

OpenStudy (alina123):

Never mind about the circumference word but I'm confused on the answer

OpenStudy (alina123):

A. 18 B. 113 C. 166 D. 185

OpenStudy (ranga):

Are you sure you typed the full problem correctly? To calculate the circumference of a wheel you need the radius or the diameter of the wheel. The thickness of the tire doesn't help calculate the circumference.

OpenStudy (ranga):

Okay, they have given you the diameter of the wheel in the diagram. Could you retype the text part of the question again?

OpenStudy (alina123):

ill attach a file

OpenStudy (ranga):

ok.

OpenStudy (alina123):

that would easier,

OpenStudy (alina123):

sorry if it took long

OpenStudy (alina123):

number 9

OpenStudy (ranga):

|dw:1396647096800:dw|

OpenStudy (alina123):

so 65 is the diameter

OpenStudy (ranga):

Diameter of wheel + tire = 65 cm. Thickness of tire = 6 cm. From the diagram above can you figure the diameter of the wheel alone without the tire?

OpenStudy (alina123):

29.5

OpenStudy (alina123):

54

OpenStudy (ranga):

Look at the diagram. The outer circle is 65 cm wide. There is one thickness of tire on the left and one thickness on the right. If you subtract them both from the outer circle diameter you will get the inner circle diameter.

OpenStudy (alina123):

so 53 because 65-12

OpenStudy (ranga):

Yes. What is the circumference of a circle whose diameter is 53 cm?

OpenStudy (alina123):

166.42

OpenStudy (ranga):

Yes.

OpenStudy (alina123):

oh and for the first question i gave about the table cloth is the answer 157

OpenStudy (ranga):

Yes.

OpenStudy (alina123):

and thanks so much for the help because id be lost

OpenStudy (ranga):

You are welcome.

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