Question

A stick is 1m long,farmer measures his rectangular field with the stick and it is 900m² .But later he realises that the stick is 90 cm.Find the actual area of the rectangular field.

Answer 1

Solution:

Given:A stick is 1m long,farmer measures his rectangular field with the stick and it is 900m²,.Later he realises the length of the stick is 90cm.

by using the idea of ratio,

100:90000
90: x

                 90000 x 90     8100000
        x  =-------------------=-----------------=810000cm²=810m²
                     100                100
The original area of the field is 810m²