Question

The total surface area of a cuboid of length 6m and breadth 5m is 126 sq.find its height

Answer 1

Answer:Let the height,h be x
Breadth,b=5m
Length,l=6m
Since,T.S.A =126 sq.m
Therefore,
2(lb+bh+lh)=126 sq.m
2(6×5+5×x+6×x)=126 sq.m
2(30+5x+6x) =126 sq.m
60+10x+12x =126 sq.m
10x+12x =126-60
22x =66
x=66/22
x=3
Therefore,the height of the cuboid is 3m.

Answer 2

Answer:

Answer:Let the heighth be x

Breadth,b=5m

Length,l=6m

Since,T.S.A =126 sq.m

Therefore,

2(lb+bh+lh)=126 sq.m

2(6x5+5xx+6xx)=126 sq.m

2(30+5x+6x) =126 sq.m 60+10x+12x =126 sq.m

10x+12x =126-60

22x =66

x-66/22

x=3

Therefore,the height of the cuboid is 3m.

Step-by-step explanation:

Answer:Let the heighth be x

Breadth,b=5m

Length,l=6m

Since,T.S.A =126 sq.m

Therefore,

2(lb+bh+lh)=126 sq.m

2(6x5+5xx+6xx)=126 sq.m

2(30+5x+6x) =126 sq.m 60+10x+12x =126 sq.m

10x+12x =126-60

22x =66

x-66/22

x=3

Therefore,the height of the cuboid is 3m.

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