Question

An auditorium measures 80m in length and 30 min breadth. If the walls of the auditorium have to be decorated with colored buntings 4 times, find the length of buntings required. If the cost of 1m of buntings is Rs. 15, what is the total cost of the buntings used to decorate the auditorium?

Answer 1

The Perimeter of Auditorium = (21 + 2b) units = (2 × 80 + 2 × 30)

= 160 + 60

= 220 metres

Auditorium walls have to be decorated with colour buntings = 220 × 4 = 880 metres The cost of the buntings used to decorate the auditorium = 880 × 15 = 13,220

The cost of 1 metre of bunting = Rs 15