Question

Find the breadth of rectangle whose length is 40cm and a diagonal is 41cm,
Find the breadth of rectangle whose length is 40cm.

pls explain...​

Answer 1

Step-by-step explanation:

The diagonal of the rectangle divides it into two right-angled triangles, so we can use the pythagorean theorem to solve this problem.

41cm is the diagonal and 40cm is the length.

hyp² = length² + breadth²

41² = 40² + breadth²

1681 = 1600 + breadth²

1681 - 1600 = breadth²

breadth² = 81

breadth = √81

= 9cm

Perimeter = 2( l + b )

= 2 * (40 + 9)

= 2 * 49

= 98cm

The perimeter of the rectangle is 98cm.

Answer 2

Answer:

9cm

Step-by-step explanation:

Length of arectangle =40

Dioglonal of arectangle =41

Dioglonal=Hypotens

It is right angle triangle so,

40squre + xsqure=41 square

1600+xsqure=1681

xsqure =1681-1600

xsqure =81cm

x=9