Question

Find the perimeter of a rectangle whose one
side measures 21 cm and the diagonal is
29 m.​

Answer 1

Answer:

THE PERIMETER IS 82 CM

HOPE IT'S HELPFUL

Answer 2

Answer:

Length = 21 cm

Diagonal = 29 cm

Using Pythagoras theorem,

Breadth² =hypotenuse² - length²

= (29)² - (21)²

= (29+21) (29-21)

= 50 × 8

= 400

Breadth =√400 = 20 cm

Perimeter = 2(l+b)

= 2(21+20)

= 2×41

= 82 cm