I need help on this.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3