Question

A room is 7 m 80 cm long and 5 m 20 cm broad. By how much is the room
longer than its breadth?​

Answer 1

Answer:  260cm

Step-by-step explanation:

First convert the length and breadth into same units.

given length = 7m 80cm = 7 x 100cm + 80cm = 780cm

since 1m = 100cm

given breadth = 5m 20cm = 5x100cm + 20cm = 520cm

Length - breadth = 780-520 = 260 cm.

so the room's length is longer than it's breadth by 260cm or 2m 80cm

Answer 2

Length of the room = 7m 80cm long

1m = 100 cm

7m = 700 cm

7m 80 cm = 700 + 80

= 780cm

Breadth of the room = 5m 20cm

5m = 500cm

5m 20cm = 500 + 20

= 520cm

Length - breadth = 780 - 520 = 260cm

The room is longer than its breadth by 260cm