Question

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Answer 1

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hey mate

this your question :- perimeter of field

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The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The area is measurement of the surface of a shape.

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Your question :-the cost of fencing the fiel d at the rate of 80 per meter

ans :-Given :

Side of a square field = 80 m

Rate of fencing the field = Rs. 12

To find :

Cost of fencing the field.

Concept :

To find the cost of the field :-

Firstly, calculate the perimeter of the field because fencing is done to the boundaries and perimeter is the sum of the boundary.

For calculating it use the formula of Perimeter of square.

To find the cost of fencing multiply the area of the field by the rate of fencing the field. The resultant value will be our required answer.

Formula to calculate area of square :-

Perimeter of square = 4 × side

Solution :

Perimeter of the square field :-

Using formula,

Perimeter of square= 4 × side

Substituting the given values,

→ Perimeter = 4 × 80

→ Perimeter = 320

Area of the square field = 320 m

Cost of fencing the field = Perimeter of the field × Rate of fencing

→ Cost of fencing the field = 320 × 12

→ Cost of fencing the field = 3840

Cost of fencing the square field = Rs. 3840

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Know More :

Some Properties of square :-

Square has 4 sides, 4 angles.

All the four sides are equal to each other.

The diagonals bisect each other at 90°.

Two of the diagonals of square are equal to each other.

Some related formulae :-

Area of square = side × side

Perimeter of square = 4 × side

Diagonal of square = √2a

Perimeter of reactangle = 2(l + b)

Diagonal of rectangle = √l² + √b²

Total surface Area of cuboid = 2(lb + bh + hl)

Volume of cuboid =  length × breadth × height

Perimeter of cuboid = 4 (length + breadth + height)

Total surface area of cube = 6 × side²

Volume of cube = side³

Perimeter of cube = 12 × side

Answer 2

Answer:

a

Step-by-step explanation:

i don't know

I just guess