Find the mass of a hollow sphere of copper having internal and external diameters of 11.8cm and 12cm respectively ,given the mass of 1c of copper is 8.88g

394.86 grams

Step-by-step explanation:

Volume of the outside shell

r = d/2 = 12 cm/2 = 6cm

V = (4/3) pi * 6^3

V =  4/3 * 3.14 * 216

V = 904.32

Volume of the inside shell

r = d/2 = 11.8/2 = 5.9

V = 4/3 * pi * r^3

V = 4/3 * 3.14 * 5.9^3

V = 859.85

Difference in volume

V_d = 904.32 - 859.85

V_d = 44.47

Mass of sphere

44.47 * 8.88 = 394.86 grams

2

step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it