Question

16. Find the breadth of a rectangle if its length is 20
cm and length of its diagonal is 25 cm.​

Answer 1

ANSWER:

Let the diagonal, length, and breadth be given by D, L, and B , respectively. From the statement of the problem, we know

D+L=20

B=15

From the Pythagorean theorem, we can write

B2+L2=D2

So we have three equations and three unknowns. Solving for D , L , and B , we get

D=1258cm

L=358cm

B=15cm

In particular, the length of the rectangle is 358=4.375cm.

Here is a sketch of the rectangle:

Answer 2

Step-by-step explanation:

area of a rectangle=length×breadth

=20×breadth

diagonal=25

length = 5 cm