Question

the lengths of rectangle are x cm and the width is 5 cm. its perimeter is 29 cm. How much is x cm

Answer 1

l = x cm

b = 5 cm

Perimeter = 29 cm

29 = 2 (l + b)

29 = 2 (x + 5)

$x \: + \: 5 \: = \: \frac{29}{2}$

x + 5 = 14.5 cm

x = 14.5 - 5

= 9.5cm