CBSE BOARD X, asked by Divyani275, 11 months ago

Solve it fast ......

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Answered by Anonymous
11
Given,

length = 80cm

Breadth = 35cm

\implies ⟹ Perimeter of Rectangle = 2(Length + breadth}

\implies⟹ 2(80+35)

\implies⟹ 2(115)m

\implies⟹ = 230m

\implies⟹ Area of Rectangular field= lenght × breadth

\implies⟹ = 80×35

\implies⟹ = 2800 m²

Cost of levelling = Rs. 4.5/m²

\implies⟹ = 4.5×2800

\implies⟹ = 12,600 rs.

The boy walks at the rate of 1.5m /sec.

The boy will walk across the perimeter of the field.

\implies⟹ (3 rounds) 3× 230

\implies⟹ = 690 m

Total Distance = 690 m

\implies⟹ Speed = Distance /time

\implies⟹ Time = 690/1.5

\implies⟹ = 460 seconds

\implies⟹ = 7.6Minutes

\bf{\textcolor{blue}{\colorbox{lime}{Answer : [1] 12,600 Rs.}}} <br /><br /><br /><br />[tex]\bf{\textcolor{blue}{\colorbox{lime}{Answer : [2] Time taken = 460sec ~7.6 minutes.}}}

Answered by Banja
5

Answer : 1) 12,600rs.

Answer 2) 490 seconds

hope it helps

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