Question

What is the cost of putting a wire around a rectangle shaped box of length 50 cm and breadth 30 cm, given that 1 cm of wire costs ₹20?

• A. ₹1500
• B. ₹3200
• C. ₹1600
• D. ₹3000

Answer 1

The correct option is B ₹3200

Given,
Length of rectangular box = 50 cm
Breadth of rectangular box = 30 cm

For putting a wire around a rectangle shaped box we need to know the perimeter of the rectangular box.

Perimeter of rectangular box
= 2 (length + breadth)
$=2\times (50+30)$
$=2\times 80$
$=160cm$

1 cm of wire costs ₹ 20.
$\therefore$ Cost for 160 cm of wire
$=160\times 20$
$=₹3200$