A plywood plank measures 1cm ×8cm×90cm and has a mass of 396g. i. Find the volume of the plywood plank. ii. Find the density of the plywood.
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Answer:
VOLUME = LENGTH *BREADTH* HEIGHT
= 1*8*90
= 720 cm^3
Density = mass / volume
= 396/ 720
= 0.55 g/ cm^3
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