Question

riya was drawing a rectangle on her worksheet,then length of diagonal of a rectangle having length 12m and breadth 5m is​

Answer 1

${\huge{\sf{Given:-}}}$

Length = 12 m

Breadth = 5 m

${\huge{\tt{To\;Find:-}}$

Diagonal

${\huge{\bf{Solution:-}}}$

We know that

D² = L² + B²

(D)² = (12)² + (5)²

(D)² = 144 + 25

(D)² = 169

(D) = √169

D = 13 cm

Hence

Length of diagonal is 13 cm

Answer 2

Given : Riya was drawing a rectangle on her worksheet,  

a rectangle having length 12m and breadth 5m

To Find : length of diagonal of the  rectangle

Solution:

All the angles of rectangle are 90°

Hence two adjacent sides and Diagonal form a right angle triangle

Using Pythagorean Theorem

Diagonal²  = 12² + 5²

=> Diagonal²  = 144 + 25

=> Diagonal²  = 169

=> Diagonal = ± 13

As Length can not be negative

Hence Diagonal length = 13 m

length of diagonal of the  rectangle  is 13 m

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