Question

Find the perimeter of a rectangle with the diagonal 13 cm and length of one side is 12cm
a .33
b.34
c.35
d.36
​

Answer 1

Answer:

P=34cm

Length = 12cm

Diagonal = 13cm

P=2(l+w)

d=w ^{2} 2+l2^{2}

p = 21 + 2d sq. 1sq.1£ 1sq. 2 = 2A triangle + 2A D123 sq. 1 £ 122= 34

Answer 2

Answer:

Diagonal of the rectangle = 13 cm

Length of one side = 12cm

So by the Pythagorean Theorem

Another side of the rectangle

= √ ( Diagonal ) ² - ( Side) ²

= √ ( 13² - 12 ²) cm

= √ ( 169 - 144) cm

= √ 25 cm

= 5 cm

So the required perimeter of the Rectangle

= 2 × ( 12 + 5) cm

= 2×17 cm

= 34 cm