Question

Roma and Monika bought rope for fencing their fields. If Roma has a square
field of side 40 m and Monika has an equilateral triangle of side 50 m, who
needs to buy rope of longer length and by how much?
Match the side(s) of each square with its perimeter(P).​

Answer 1

☃️ Answer ☃️

Perimeter of Roma's field :

Side = 40 m

Perimeter = 4a

$= 4 \times 40$

$= 160 \: m$

Therefore Roma need 160 m length of rope.

Perimeter of Monika 's field :

Perimeter = s+s+s

$= 50 + 50 + 50$

$= 150 \: m$

Therefore Monika needs 150 m length of rope.

Difference between their ropes :

$160 - 150$

$= 10 \: m$

Therefore Roma needs more rope than Monika by 10 m.