Question

10 m path around it. Find
Find the area of the path inside a square field of side 10 m. The breadth of the path is 2 m.
the cost of levelling the path at $2.50 per sq. m.
A 4 m broad verandah runs a round a hall, which is 20 m long and 15 m wide. Find the are​

Answer 1

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