Question

find the areas of the rectengleswhose sides are

Answer 1

Area of first rectangle=l×b
=3×4=12cm^2
second rectangle=12×21=252m^2
third rectangle=2×3=6km^2
fourth rectangle=length 2m, width 70cm
(m in cm is 2×100=200cm)
200×70=14000cm^2
Hope you have understood....