Question

Area of rectangle whose length is 12 cm and the diagonal is 15 cm will be​

Answer 1

Answer:

Given length =12cm

Diagonal =15cm

Therefore breadth =15^2-12^2

=225-144

81

Breadth, =root of 81

=9

Now area =length x breadth

12x9=108

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Answer 2

Answer:

9cm

Step-by-step explanation:

here lenght is 12cm and diagonal is 15 cm if we draw a rectangle and putting the values we see that we need to find its breadth.

we see that it frms a right angle triangle

so by using pythagoras thm

hypo^2=length^2 + breadth^2

15^= 12^2+breadth^2

225= 144 + breadth^2

225-144=breadth^2

81= breadth^2

taking square root on both side

breadth= 9cm