Exercise 10.2
Find the Areas of the figure.
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Answers
Answer:
(a) The figure contains only 9 fully filled squares. Hence, the area of this figure will be 9 square units.
(b) The figure contains only 5 fully filled squares. Hence, the area of this figure will be 5 square units.
(c) The figure contains 2 fully filled squares and 4 half filled squares. Hence, the area of this figure will be 4 square units.
(d) The figure contains only 8 fully filled squares. Hence, the area of this figure will be 8 square units.
(e) The figure contains only 10 fully filled squares. Hence, the area of this figure will be 10 square units.
(f) The figure contains only 2 fully filled squares and 4 half filled squares. Hence, the area of this figure will be 4 square units.
(g) The figure contains 4 fully filled squares and 4 half filled squares. Hence, the area of this figure will be 6 square units.
(h) The figure contains 5 fully filled squares. Hence, the area of this figure will be 5 square units.
(i) The figure contains 9 fully filled squares. Hence, the area of this figure will be 9 square units.
(j) The figure contains 2 fully filled squares and 4 half filled squares. Hence, the area of this figure will be 4 square units.
(k) The figure contains 4 fully filled squares and 2 half filled squares. Hence, the area of this figure will be 5 square units.(l) From the given figure, we observe
(l) Covered Area Number Area estimate (square units)
Fully filled squares 2 2
Half filled squares – –
More than half filled squares 6 6
Less than half filled squares 6 0
Therefore total area = 2 + 6
= 8 square units.
(m) From the given figure, we observe
Covered Area Number Area estimate (square units)
Fully filled squares 5 5
Half filled squares – –
More than half filled squares 9 9
Less than half filled squares 12 0
Therefore total area = 5 + 9
= 14 square units
(n) From the given figure, we observe
Covered Area Number Area estimate (square units)
Fully filled squares 8 8
Half filled squares – –
More than half filled squares 10 10
Less than half filled squares 9 0
Therefore total area = 8 + 10 = 18 square units