Answer:
r=7
Step-by-step explanation:
Work it backwards
1436.6=4/3pir^3
multiply both sides by the reciprocal, 3/4
1077.45=pir^3
divide by pi (3.14)
342.96
take the cube root of the number
7
75 cm
Every inch is 2.54 cm, so 29.5 in=74.93 cm. 74.93 rounded to the nearest whole is 75cm.
462
3/5 of 35 is 21
21 times 22 is 462