4) the diameter of the larger circle is 20.4 cm. the diameter of the smaller circle is 10.8 cm.

what is the best approximation for the area of the shaded region?

use 3.14 to approximate pi.

72.3 cm²

235.1 cm²

289.4 cm²

326.7 cm²

kindly see the attached photo.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?

Ashop has a sale that offers 20% off all prices. on the final day they reduce all the sale prices by 25% linz buys a ratio on the day. work out the overall percentage reduction on the price of the ratio