cos ece) A metal parallelepiped of measures 16 om em 10 cm was melted

1.	cos ece) A metal parallelepiped of measures 16 om em 10 cm was melted fo make coinHow many coins weremade if the thickness & diameter of each con was 2 mm & 2 em respectively
Answer» Volume of metal parallel piped Vp = length * breadth * height = 161110 = 1760 cm^3 Given, coin thickness h = 2 mm =.2 cmcoin diameter d = 2 cm Let number of coins made = n Then, volume of one coin Vc = pirrh = 22/711.2 = 4.4/7 Now,n4.4/7 = 1760n = 17607/4.4 = 16007/4 = 4008 = 2800 Therefore number of coins made = 2800

cos ece) A metal parallelepiped of measures 16 om em 10 cm was melted fo make coinHow many coins weremade if the thickness & diameter of each con was 2 mm & 2 em respectively

Answer»

Volume of metal parallel piped Vp = length * breadth * height = 16*11*10 = 1760 cm^3

Given, coin thickness h = 2 mm =.2 cmcoin diameter d = 2 cm

Let number of coins made = n

Then, volume of one coin Vc = pi*r*r*h = 22/7*1*1*.2 = 4.4/7

Now,n*4.4/7 = 1760n = 1760*7/4.4 = 1600*7/4 = 400*8 = 2800

Therefore number of coins made = 2800