Find the length of the daigonal of a rectangle ABCD whose sides are 15cm and 8cm
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Find the length of the daigonal of a rectangle ABCD whose sides are 15cm and 8cm
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Explanation:
Hola ! mates here's Ur solution...
Given:
BC = 15cm.
CD = 8 cm.
Find; BD the diagonal.
Solution:
and, we know that all the angles of rectangle is 90°.
so, <C = 90..
Now, by Pythagoras theorem:
In ∆ BCD ;
BC ² + CD² = BD²
= 15² + 8² = BD²
= 225+64= BD²
= 289= BD ²
= BD = √289= 17cm.(ans)...
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