Lily found that a monument that is 45 meters long casts a shadow 24 meters long. Then lily noticed that a radio tower nearby casts a shadow 32 meters long. How tall is the radio tower?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g