Question

A pillar is 30 metre high 5 metre long and 4 metre wide find the cost of clearing the pillar at Rs 5 per 60 metre square
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Answer 1

Answer:

Dimentions given;

H= 30 m

l= 5m

B=4m

So C. S. A of the pillar is given by

2(L+B) ×H unit ²

C. S. A = 2(L+B) ×H unit ²

C. S. A = 2( 5+4)×30

C. S. A = 18×30

C. S. A = 540 m²

A/Q,

By Applying unitery method we get :-

60 m²= $ 5 { $ = rupess}

1 m² = 5/60

540m² =( 5/60)×540

Total Cost = $ 45

Answer 2

Answer:

Dimentions given;

H= 30 m

l= 5m

B=4m

So C. S. A of the pillar is given by

2(L+B) ×H unit ²

C. S. A = 2(L+B) ×H unit ²

C. S. A = 2( 5+4)×30

C. S. A = 18×30

C. S. A = 540 m²

A/Q,

By Applying unitery method we get :-

60 m²= $ 5 { $ = rupess}

1 m² = 5/60

540m² =( 5/60)×540

Total Cost = $ 45