This blog is managed by Song Hock Chye, author of Improve Your Thinking Skills in Maths (P1-P3 series), which is published and distributed by EPH.

Tuesday, March 17, 2009

Tao Nan School P5 SA2 2006 Math Q43

A container measuring 17cm by 8cm by 10cm was half filled with water. When 8 cubes were put in, the water level became 8cm. Find the volume of each cube.


Height increase -----
8 cm (new height) – 5 cm (half tank) = 3 cm

Volume of 8 cubes -----
17cm x 8cm x 3cm
= 408 cubic cm

1 cube ----- 408 cubic cm divided by 8
= 51 cubic cm

Answer: 51 cubic cm

No comments: