Find his rate:
120 / 15 = $8 per hour
Multiply the rate by hours:
$8 x 20 hours = $160
He will earn $160
Answer:
by using kinetic and potentail energy
Answer:
1648.5
Step-by-step explanation:
20cm radius - 10
50cm radius- 25
area = 3.14×10²
3.14×100
=314
area= 3.14× 25²
3.14×625
= 1962.5
1962.5
- 314
_________
1648.5
ok but I don't know what it is
