Question

each side of a square flower bed is 3m 80cm long .it is extended by digging the strip 50 cm wide all around it find the area of the in large flower bed and also increase in area of flower bed .
solve it fast ........​

Answer 1

s=3m80cm=380cm

s increased=380+50+50=480cm

area of old flowerbed=s×s

=380×380

=144400cm^2

area of new flower bed=s×s

=480×480

=230400cm^2

area increased=230400-144400

=86000cm^2