Answer:
Step-by-step explanation:
Total surface of the cube = 6a²
= 6 * 42 * 42
= 10584 cm²
Hole that is drilled out, will make a cylinder shape in the middle of the cube
Volume of iron in the cube = Volume of cube - volume of cylinder
Volume of cube = a³
= 42 * 42 * 42
= 74088 cm³
Cylinder:
r = 14/2 = 7 cm
h = sideof the cube = 42 cm
Volume = πr²h

= 6468 cm³
Volume of iron in the cube = Volume of cube - volume of cylinder
= 74088 - 6468
= 67620 cm³
Since the interest is simple, you don't have to compound it multiple times. You just need to divide the 208 days with 365days. The calculation would be:
interest= principal * number of year * rate
interest= $18,981 * 208/365 * 9%=$973.49
8x + 2x
Plug the variable in.
8×6 + 2×6
48+12 = 60
If you didn't go in a straight line, you will not reach 30 miles but however 30 miles, in general, going at a pace of 75mph it would take you 1 through 1 hour and a half.
Simplest form would be 58/3