By counting squares, estimate the area of the figure 10.9 a.

Explanation

Make an outline of the figure on agraph sheet.
This is how the squares cover the figure
(i)fully filled squares=1
area estimate(sq unit)=1
(ii)half -filled squares=0
area estimate=0
(iii) more than half-filled squares=7
area estimate=7
(iv)less than half-filled squares=9
area estimate=0
Total area`=1+7=8`sq units