Answer:
60.6528 kg
Step-by-step explanation:
Assuming the solid ball of iron is a sphere with a radius of 18 cm (or 0.18 m), we can compute the volume of the sphere:

Therefore, the volume of the solid ball is 0.007776 m³
Since we know that density is mass/volume, then we can find the mass of the iron:

Thus, the mass of the solid ball of iron is 60.6528 kg
1. Would be 58/11
Because we convert the mixed number to an improper fraction, 5x11+3/11. We then would multiple the numbers with gives us 55+3/11. We add that giving us 58/11
63% decrease.
0.63•80=50.4kg
80kg-50.4kg=29.6kg
Answer: 3.50c + 3.25p <_ 30
Step-by-step explanation:
You need to put the price of 3.5 C plus the price of 3.25 P to be lest that or equal to $30