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Find the perimeter of each of the following figures:
(a) | (b) |
(c) | (d) |
(e) | (f) |
Perimeter of a polygon is equal to the sum of the lengths of all sides of that polygon.
(a) Perimeter = (4 + 2 +1 + 5) cm = 12 cm
(b) Perimeter = (23 + 35 + 40 + 35) cm = 133 cm
(c) Perimeter = (15 + 15 + 15 + 15) cm = 60 cm
(d) Perimeter = (4 + 4 + 4 + 4 + 4) cm = 20 cm
(e) Perimeter = (1 + 4 + 0.5 + 2.5 + 2.5 + 0.5 + 4) cm = 15 cm
(f) Perimeter = (1 + 3 + 2 + 3 + 4 + 1 + 3 + 2 + 3 + 4 + 1 + 3 + 2 + 3 + 4 +
1 + 3 + 2 + 3 + 4) = 52 cm
read less(a) The perimeter of the quadrilateral
= Sum of all the sides
= ( 5 + 4 + 2 + 1 )cm
= 12cm.
(b) The perimeter of the rhombus
= Sum of all the sides
= ( 40 + 35 + 35 + 23 )cm
= 133cm.
(c) The perimeter of the regular parallelogram
= 4 × Side of the parallelogram
= ( 4 × 15 )cm
= 60cm.
(d) The perimeter of the regular Pentagon
= 5 × Side of the Pentagon
= ( 5 × 4 )cm
= 20cm.
(e) The perimeter of the figure
= Sum of all the sides
= ( 1 + 4 + 0.5 + 2.5 + 2.5 + 0.5 + 4 )cm
= 15cm.
(f) The perimeter of the figure
=[ ( 1 + 3 + 2 + 4 + 3 ) × 4 ]cm
= (13 × 4)cm
= 52cm
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