ABCD is a rectangle. If BD = 15 m and AD = 12 m, what is the length of CD?
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Answer:
length of CD = 9m
Step-by-step explanation:
here, In triangle ABCD, BD = 15m (which is a diagonal of rectangle) and AD = 15m.
now, opposite sides of rectangle are equal AD = BC.
∴ By pythagoras theorem in ΔBCD
= CD² = BD² - BC²
= CD² = 15² - 12²
= CD = √81
= CD = 9m
hence, length of CD = 9m.
hope it will help you.
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