The diagonal of a rectangle is 15 cm. The width is
12 cm. What is the length of the rectangle?
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1
Answer:
9 cm.
Step-by-step explanation:
Given= AC = 15 cm.
AB = 12 cm.
Find BC = ?
solution:
∆ ABC
by pythagoras theorem
BC = √(AC)² - (AB)²
= √(15)² - (12)²
= √225 - 144
= √81
= 9 cm.
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