Answer:
1 big square contains = 100 small squares
half of big square = 100 ÷ 2 = 50 small squares
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In the (a) figure,
there are 8 half of big squares = 8 ÷ 2 = 4 big squares
and 4 big square = 4 + 4 = 8
now,
to find area = 8 x 100 = 800cm²
In the figure (b),
there are 8 big squares = 8 x 100 = 800 cm²
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Do (c) & (d) by yourself.
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