gets on it. What is the mass of man?the wall is 16128 m, what is its w

1.	gets on it. What is the mass of man?the wall is 16128 m, what is its width?ue surface is polished at 2 paisa per dm2, then find the cost incurred to polish.ving a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a mant of a wall is six times its width and the length of the wall is seven times its height. If volume ofolume of a rectangular block of stone is 10368 dm. Its dimensions are in the ratio of 3:2:1. If itsen216
Answer» 15)The dimensions are 3x : 2x : x The volume is { 6x }^{ 3 }=10368. So, x is { 6x }^{ 3 }=10368 therefore x = 12 So, the dimensions are 36cm, 24cm and 12 cm respectively. The surface area is 2(36 ×24+ 24× 12+ 12×36)=3168 cm^2 Total cost is 3168×0.02=Rs. 63.36

gets on it. What is the mass of man?the wall is 16128 m, what is its width?ue surface is polished at 2 paisa per dm2, then find the cost incurred to polish.ving a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a mant of a wall is six times its width and the length of the wall is seven times its height. If volume ofolume of a rectangular block of stone is 10368 dm. Its dimensions are in the ratio of 3:2:1. If itsen216

Answer»

15)The dimensions are 3x : 2x : x

The volume is { 6x }^{ 3 }=10368.

So, x is { 6x }^{ 3 }=10368

therefore x = 12

So, the dimensions are 36cm, 24cm and 12 cm respectively.

The surface area is 2(36 ×24+ 24× 12+ 12×36)=3168 cm^2

Total cost is 3168×0.02=Rs. 63.36