Question

a pit of dimension 2.5 m* 2.5 m*4.5 m is dug at rate of 15 per cubic meter find the cost of digging the pit

Answer 1

Answer:

• Cost of digging = Rs. 421.87

Step-by-step explanation:

Given:

• Length of cuboid pit = 2.5 m
• Breadth of cuboid pit = 2.5 m
• Height of cuboid pit = 4.5 m

To Find:

• Find the cost.

Now, firstly we will find volume of cuboid pit.

⇒ Volume of cuboid = lbh

⇒ Volume of cuboid = 2.5 × 2.5 × 4.5

⇒ Volume of cuboid = 28.12 m³

Now, cost of digging of 1 m³ = Rs. 15

So, cost of digging of 28.12 m³ = 28.12 × 15

Cost of digging of 28.12 m³ = Rs. 421.87

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Answer 2

$\huge{\underline{\underline{\red{\mathfrak{Answer :}}}}}$

$\tt Given \begin{cases} \sf{Length \: (l) \: = \: 2.5 \: m} \\ \sf{Breadth \: (b) \: = \: 2.5 \: m} \\ \sf{Height \: (h) \: = \: 4.5 \: m} \end{cases}$

To Find :

Cost of digging the pit

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Solution :

We have to find volume :

$\Large{\underline{\boxed{\sf{Volume \: = \: lbh}}}}$

Put Values

⇒Volume = 2.5 * 2.5 * 4.5

⇒Volume = 6.25 * 4.5

⇒Volume = 28.125

$\Large \leadsto {\boxed{\sf{Volume \: = \: 28.125 \: m^3}}}$

_______________________________

We are given it is dugged at rate of Rs 15 per m³

So,

Cost of Digging 28.125 m³ = 15 * 28.128

⇒Cost of digging = Rs 421.875

$\Large \leadsto {\underline{\boxed{\sf{Cost \: = \: Rs \: 421.875}}}}$

_______________________________

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