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Home > PC > Chapter 4 > Lesson 4.2.1 > Problem 4-76

4-76.

What part of the entire cardboard would 60° represent?

What is the area of a circle?

Set up information involving area and weight.

Set up a proportion and solve for the new weight.

Acircle = πr2

Aoriginal = 100π
Weightoriginal = 120
Anew = 15²π = 225π
Weightnew = ???