Question

The perimeter of a square hall is 144m find the cost of commenting the hall at ₹6 per sq m

Answer 1

Answer:

720 Rs.

Step-by-step explanation:

perimeter of fence = 144 m

cost of fence per sq.m = 5 Rs.

total cost of fence = 144 * 5

                             =720 Rs.

Answer 2

$☯ \: {\underline{\underline{\frak\red{Question:-}}}}$

The perimeter of a square hall is 144m find the cost of commenting the hall at ₹6 per sq m.

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$☯ \: {\underline{\underline{\frak\red{Answer:-}}}}$

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${\underline{\boxed{\tt\green{✧ \: Given:}}}}$

perimeter of a square hall = 144m .

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${\underline{\boxed{\tt\purple{✧ \: Find:}}}}$

cost of commenting the hall = ?

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${\underline{\boxed{\tt\pink{✧ \: Solution:}}}}$

We know that

⠀⠀⠀⠀⠀⠀⠀⠀Perimeter of square = 4a ,

Where a is the length of the side

⠀⠀⠀⠀⠀$\sf{:⇒ \: 4a = 144 \: m}$

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⠀⠀⠀⠀⠀$\sf{:⇒a = \frac{144}{4} }$

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⠀⠀⠀⠀⠀${\boxed{\bf{:⇒ \: \: 36 \: m}}}$

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Area of Square is given as ,

⠀⠀⠀⠀ ⠀area = a² ⠀⠀[where, a is the length of the side]

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${\underline{\bf{By \: Substituiting \: the \: value}}}$

⠀⠀⠀⠀ $\sf{➟ \: a² = (36)²}$

⠀⠀⠀⠀ $\sf{➟ \: {a}^{2} = 1296 \: {m}^{2} }$

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Cost per unit meter = ₹ 6

cost of the area of the square,

⠀⠀⠀⠀ ⠀⠀Cost = 1296 × 6

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⠀⠀⠀ ⠀⠀$➼ \: {\boxed{\red{ \: ₹ \: 7776}}}$ ans..

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☯ cost of commenting the hall = ₹ 7776.

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