Find the perimetre of a rectangle whose length is 24cm and diaognal is 25 cm
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Answered by
2
Let the breadth be b
25² = 24² + b²
25²-24² = b²
(25+24) (25-24) = b²
49 = b²
7 = b
Now perimeter = 2(24+7)
= 2×31
= 62cm
25² = 24² + b²
25²-24² = b²
(25+24) (25-24) = b²
49 = b²
7 = b
Now perimeter = 2(24+7)
= 2×31
= 62cm
Dhirajjangir:
But according to my book answer sheet answer is 62
Answered by
1
Hi!
Length= 24cm
Diagonal= 25cm
Breath=b
25^2=24^2-b^2
625=576+b^2
625-576=b^2
49=b^2
b=√49
b=7cm
Perimeter of rectangle= 2(l+b)
= 2(24+7)
=2(31)
=62cm
Hope it helps...!!!
Length= 24cm
Diagonal= 25cm
Breath=b
25^2=24^2-b^2
625=576+b^2
625-576=b^2
49=b^2
b=√49
b=7cm
Perimeter of rectangle= 2(l+b)
= 2(24+7)
=2(31)
=62cm
Hope it helps...!!!
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