DemsityPlease help
Density of a regular wooden block is 0,8 gr/cubic centimeters. The Mass of the
wooden block is 800 grams. We hollow the wooden block and put melted iron into the hole with a density of 7,8 g/cubic centimeters.The Total mass of the system becomes 1.5 kilograms. Find the volume of the hole(hollow)?
Answer is 100 but I can't find the answer.
I found the volume of the block as 1000 cc.
density=mass/volume
7.8=(1500800)/V
I found the answer as 90 but the answer is 100. Please help.
