Jawapan

2016-10-02T23:07:02+08:00
( 30 x 50 x 2.8 ) - 600
2016-10-05T00:22:15+08:00
Long = 50 m
Wide = 30 m
Deep = 3 m

Contain 600 m³ of water 

The deep of the water :
= 600m³ ÷ 50 ÷ 30
= 0.4m

0.2 m from the top :
= 3 m - 0.2 m
= 2.8 m 

Volume of the water has to be added :
= (2.8m - 0.4m) ÷ 0.4 x 600m³
= 2.4m ÷ 0.4m x 600m³
= 6 x 600m³
= 3 600m³

CHECK UP:
= (3 600m³ + 600m³) ÷ 50 ÷ 30

= 4 200m ÷ 50 ÷ 30
= 2.8m