Smith decorated the boundaries of the windows of his house with illumination on Christms . Find the length of the electricity wire needed if the two rectangular windows are of size 75 cm × 60 cm and a trapezium shaped window has parallel sides measuring 1.2 m, 80 cm; and non parallel sides are 75 cm each.
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8.9 m length of the electricity wire needed
Step-by-step explanation:
Two windows of Rectangle sixe 75 cm * 60 cm
Perimeter of 1 rectangle window = 2(75 + 60)
= 2 * 135
= 270 cm
Perimeter of 2 Rectangle windows = 2 * 270 = 540 cm
Trap ezium shaped window has parallel sides measuring 1.2 m, 80 cm; and non parallel sides are 75 cm each.
1.2 m = 120 cm
Perimeter = 120 + 80 + 75 + 75 = 350 cm
Total length of wire required = 540 + 350
= 890 cm
= 8.9 m
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