Question

find the length of the aluminium strip required to frame an object of lenght 80 cm and breadth 60 cm​

Answer 1

Step-by-step explanation:

Perimeter of rectangle = 2 ( L+B )

Perimeter of rectangle = 2 ( 60 + 80 )

                                       = 2 *140

                                         =280 cm

Answer 2

Perimeter of rectangle =2x(L+B)
Perimeter of rectangle = 2x(60+80)
2x140

280 cm