Question

find the length of a rectangle whose diagonal is 29cm and breath is 20cm.​

Answer 1

Answer:

breadth of the rectangle = 20cm

diagonal of the rectangle=29cm

WE KNOW THAT ALL ANGLES IN A  RECTANGLE IS  90 DEGREES

SO BY PYTHAGORAS THEOREM

$DIAGONAL^{2} = BREADTH^{2} +LENGTH^{2}$

=>$29^{2}=20^{2} +LENGTH^{2}$

=>$LENGTH^{2} =29^{2} -20^{2}$

=>$LENGTH^{2}=441$

=>LENGTH=$\sqrt{441}$

                  =>21

HENCE THE LENGTH OF THE RECTANGLE IS 21CM