CBSE Class 7 Answered
A rectangular field is half as wide as it is long and is completely enclosed by x meters of fencing. Find the area of the field in terms of x.
Asked by mahimarana007 | 03 Dec, 2018, 05:57: PM
Expert Answer
let l be the length of rectangular field. Then its breadth is l/2 .
periemeter = 2 [ l +(l/2) ] = 3l m
we are given, 3l = x m ; hence l = ( x/3 ) m ................(1)
area = l × (l/2) = l2 / 2 ...........................( 2 )
using (1) and (2) , area = x2 / 18
Answered by Thiyagarajan K | 03 Dec, 2018, 08:43: PM
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