Question

find the length and width of a rectangle if its length is thrice its width and its diagonal is 7

Answer 1

Answer:

I think

Step-by-step explanation:

given,

diagonal=7cm

width=w

length =3w=L

by pythogerous theorem

(7)^2=w^2+(3w^2)

49=w^2+9w^2

49=10w^2

49/10=w^2

w=√48/√10

w=7/√10

L=3×7/√10

=21/√10

therefore,width=7/√10

length=21/√10