exam Maths Puzzle Numerical Ability

A certain kind of wood weighs 0.85 g per cubic cm. An 18cm by 12cm by 10cm block of that wood is floating in water. Approximately what weight of water does the block displace?

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exam Other Question
Gi ven the numbers as measurments of the sides of a triangle, Can the triangle exist and explain,

A. 8,10,20

B. 16,18,25

C.7,7,7 The surface area of a cube is 216 cm2. What is the length of an edge?