Question

the floor of rectangular hall has perimeter 250 m if the cost of painting the four walls @ rupees 10 M per m sqare is 15000 find the heigt

Answer 1

Answer:

Step-by-step explanation:

Given,

Perimeter= 250m

Rate of painting the four walls= rupees 10 per m

Cost= 15,000

Height=?

As we all know,

Perimeter= 2(l+b)

250=2(l+b)

250/2=(l+b)

125 = (l+b)...................(1)

Area of 4 walls= 2(l+b)h

=2(125)h     {from (1)}

=250h

Cost of painting 1m= 10

Cost of painting 250h metre= 10*250h

15,000=2500H

15000/2500 = h

6 = h

there fore 6 metre is height