Your cart is empty.
Practice each question, then open the answer or worked solution.
Rahmat needs to find the length of the boundary of the field. Can you find it from this picture? See the length of each side written near it.
We know that the length of the boundary = 9 + 15 + 21 + 9
= 54 metre
Rahmat bought a roll of 70m wire for the fence.
Ganpat – Can you give me the wire that is left out with you? I will use it for my field. How much wire did Rahmat give to Ganpat?
It is given that the total length of wire = 70 m
Length of wire used by Rahmat for boundary = 54 m
So the length of wire left out = 70 – 54 = 16 m
Hence, Rahmat gave 16 m of wire to Ganpat.
NCERT Textbook Page No. – 150
Ganpat thanked Rahmat and started fencing his own field. But he needed to get more wire.
(a) How long is the boundary of Ganpat’s field?
(b) How much more wire will Ganpat need for his field?
(a) Here, the length of the boundary of Ganpat’s field = 9 + 15 + 15 + 9 + 18
= 66 m
(b) We know that length of the boundary of Ganpat’s field = 66 m
If Rahmat gave 16m wire to Ganpat
Need of more length of wire = 66 – 16 = 50 m
Hence, Ganpat needs 50 m more wire to boundary his field.
NCERT Textbook Page No. – 151