Question

A square garden of side 40m is having two cross roads 2m wide going from its middle. Find the cost of laying grass
at the rate of 7 per sq m in the garden excluding the roads.
Ans:- A-1632
B-14385
C-10108
kon kon de pata ha ise ka answer dek the ha ​

Answer 1

Answer:

A path I m wide is built along the border and inside a square garden of side 30 m. Find

(1) the area of the path

(2) the cost of planting grass in the remaining portion of the garden at the rate of Rs 40 per m.

ANSWER

Let ABCD, the square garden of side= 30 m.

PQRS is the region inside the garden.

so,

PQ = (30 -1-1 ) = 28 m

also

PS = ( 30 – 1 – 1 ) = 28 m

(i) Area of the path = Area of ABCD – Area of PQRS

= [( 30 x 30) – (28 x 28)]

= 900 – 784

= 116 sq.m

(ii) Area of the remaining portion in which the grass is planted = Area of square PQRS

= 28 x 28

= 784 sq.m

cost of planting the grass in the region PQRS = area x cost = 764 x 40

=31,360

Answer 2

A path I m wide is built along the border and inside a square garden of side 30 m. Find

(1) the area of the path

(2) the cost of planting grass in the remaining portion of the garden at the rate of Rs 40 per m.

ANSWER

Let ABCD, the square garden of side= 30 m.

PQRS is the region inside the garden.

so,

PQ = (30 -1-1 ) = 28 m

also

PS = ( 30 – 1 – 1 ) = 28 m

(i) Area of the path = Area of ABCD – Area of PQRS

$\implies$ [( 30 x 30) – (28 x 28)]

$\implies$ 900 – 784

$\implies$ 116 sq.m

(ii) Area of the remaining portion in which the grass is planted = Area of square PQRS

$\implies$ 28 x 28

$\implies$ 784 sq.m

cost of planting the grass in the region PQRS = area x cost = 764 x 40

=31,360