6 A rectangular lawn 80 m x 60 m has two roads each 10m wide running in the middle of it, one parallel to length and other to breadth . find the cost of travelling them at Rs 20 per sq cm?
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Step-by-step explanation:
TSA =2 *(L+B) *H
= 2*(80+60)*10
= 2*(140)*10
=2800m
cost of traveling= 2800*20
=5600 rs
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