Question

The sides of a rectangle are 20 m and 15m respectively. Find the length of its diagonal ​

Answer 1

Answer:

Correct answer, diagonal =25m

Answer 2

Answer:

given :- l = 20 m , b = 15 m , figure is rectangle.

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Question :- to find length of diagonal .

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Process :-

☆ 1 ) draw the rectangle of length = 20 m

and breadth = 15 m .

☆ 2 ) to find the length of diagonal of the rectangle , we can use Pythagoras theorem .

☆ Pythagoras theorem :- h² = b² + p² .

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Answer :-

☆ let diagonal of the rectangle be 'h' .

by using Pythagoras theorem ,

==> l = base = 20 m

==> p = height = 15 m

==> diagonal = h = ?

(hypotenuse)² = (base)² + ( height )²

diagonal = h² = (20)² + (15)²

= h² = (400 + 225 ) m²

= h² = 625 m²

= h = 25 m .

therefore, length of diagonal = 25 m .