Arectangle has a width of 9 units and a length of 40 units. what is the length of a diagonal?
31 units
39 units
41 units
49 units

 The correct option is

(C) 41 units.

Step-by-step explanation:  Given that a rectangle has a width of 9 units and a length of 40 units.

We are to find the length of its diagonal.

We know that

each diagonal of a rectangle divides it into two congruent right-angled triangles.

In the figure below, ABCD is a rectangle with AC as one of its diagonal.

FRom the given information, we must have

AD = 40 units and CD = 9 units.

To find the length of diagonal AC.

Since ACD is a right-angled triangle with AC as the hypotenuse, so we must have, using Pythagoras theorem,

Thus, the required length of the diagonal is 41 units.

Option (C) is CORRECT.

the answer is 288..

hope this

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195