Question

Length of a rectangle is 8 cm and diagonal is 10 cm. Find its area
step by step.​

Answer 1

Answer:

Let ABCD be the given rectangle in which length AB = 8 cm and diagonal AC = 10 cm.

Since each angle of a rectangle is a right angle,

we have ∠ABC = 900 .

From right angled triangle ABC , we have

AB2 + BC2 = AC2

⇒BC2 = AC2 - AB2 = {(10)2 -(8)2} = (100 - 64) = 36

⇒BC =  = 6 cm.

Hence , breadth = 6 cm.

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Let ABCD be the given rectangle in which length AB = 8 cm and diagonal AC = 10 cm.

Since each angle of a rectangle is a right angle,

we have ∠ABC = 900 .

From right angled triangle ABC , we have

AB2 + BC2 = AC2

⇒BC2 = AC2 - AB2 = {(10)2 -(8)2} = (100 - 64) = 36

⇒BC =  = 6 cm.

Hence , breadth = 6 cm.