Question

a rectangular field is 80m 50cm long and 57cm wide. find the area. its perimeter and cost of watering it 80paisa per square. meter​

Answer 1

Length=80 ×100+50 cm

=8050

Breadth=57 cm

Area of the rectangle=L×B

=8050×57

=458850cm^2

As, 1cm^2=1/100^2m

458850cm=458850/10000m

=45.8850m

Perimeter of the rectangle=2(L+B)

=2(8050+57)

=16100+114

=16214cm

Cost of watering for 1 m=80 paise

=80/100rupees=4/5 rupees

Cost of watering the rectangle=45.8850×4/5

=9.1770×4=36.7080 rupees

or

3670.80 paise