What is the volume of the cone?

a 147 pi cm^3
b 21 pi cm^3
c 189 pi cm^3
d 42 pi cm^3

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?