Question

A rectangular piece of land measures 3m 35cm by 4m 45cm.What is the perimeter of this land

Answer 1

First we need to convert all measurements to a standard unit. Here we convert all to metres.

100 cm = 1 m
1 cm = (1/100) m

So, 3m 35 cm = 3 + (35/100) = 3.35 m

​​​​​​Similarly, 4m 45cm = 4 + (45/100) = 4.45 m

It is necessary to convert all measurements to a common unit for the correctness of the solution.

Perimeter of rectangle is given by 2*(l+b)
l = length
b = breadth

So, perimeter of rectangular piece of land = 2*(3.35 + 4.45) = 2 * 7.8 = 15.6 metres

15.6 metres = 15 m (0.6*100) cm = 15 m 60 cm
is the final answer.