The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?
37500 sq.m
40000 sq.m
48000 sq.m
18750 sq.m
Description (বিবরণ) :
প্রশ্ন: The breadth of a rectangular field is 60% of its length . If the perimeter of the field is 800 m, what is the area of the field ?
ব্যাখ্যা:
Let, length = 100x meter, breadth = 60x meter
Perimeter = 2 ( length + breadth)
800 = 2 ( 100x + 60x)
800 = 320x
x = 5/2
area = ( 100 × 5/2) × ( 60 × 5/2) = 37500 sq.metre
