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Question
Construct a square whose area is 23.04 cm2.
Geometric Constructions
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Solution
Given: Area of square = 23.04 cm2.
Step-wise calculation:
1. Let side = a. Then a2 = 23.04.
2. `a = sqrt(23.04)`
= `sqrt(2304/100)`
= `48/10`
= 4.8 cm
3. Construction (standard ruler-and-compass method when a side is given):
Draw segment AB = 4.8 cm.
At A construct a perpendicular to AB; on it mark point D so that AD = 4.8 cm.
At B construct a perpendicular to AB on the same side as AD; on it mark point C so that BC = 4.8 cm.
Join C to D. ABCD is the required square.
A square with area 23.04 cm2 has side length 4.8 cm; construct it by drawing a side of 4.8 cm and erecting perpendiculars as described to complete the square.
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