A circle of radius 10 cm cut out of cardboard weighs 120 g. Homework Help ✎
How much would a 60° sector weigh?
How much would a circle of radius 15 cm cut out of the same cardboard weigh?
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 = ???