Question

124. Find the price of copper rod 5 cm diameter and 12 metres long. Specific
gravity of copper is 7.2 grams/c.c. and the rate is Rs. 70 per kg.​

Answer 1

First we wan to find volume of hte rod in cc

Cc is cm cube

2.5*2.5*3.14*12*100= x

X*7.2= y gram

Y gram/1000= z kg

Price is = z*70

Done simple calculation get the.answer