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प्रश्न
Length of one of the diagonals of a rectangle whose sides are 10 cm and 24 cm is ______.
पर्याय
25 cm
20 cm
26 cm
3.5 cm
उत्तर
Length of one of the diagonals of a rectangle whose sides are 10 cm and 24 cm is 26 cm.
Explanation:
In ΔBCD,
∠BDC = 90°
∴ Using Pythagoras theorem,
We have, BC2 = BD2 + CD2
⇒ BC2 = 102 + 242
⇒ BC2 = 100 + 576
⇒ BC2 = 676
⇒ BC = `sqrt(676)`
⇒ BC = 26 cm
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