Question

The lenght of a rectangle is thrice times its breadth. If the area is 147ms sequare. Find the lenght of the field. This question is frm Quadratic equation. plzzzz sove fast i will mark brainlist

Answer 1

Let breadth be x
So length given 3x
area = length× breadth
=
$3x \times x = 147 \\ 3x {}^{2} = 147 \\ {x}^{2} = 147 \div 3 \\ {x}^{2} = 49 \\ x = \sqrt{49} \\ x = 7$
now breadth is 7
so length = 3x = 3×7 = 21

Length is 21 and breadth is 7


Hope I helped you dear friend

Answer 2

The lenght of a rectangle is thrice times its breadth

l = 3b

the area is 147ms sequare

we know that 

area of a rectangle = lenght * breadth

so

147m²  = l * b

since l = 3b

147m² = 3b*b

147m²  = 3b²

now,

b² = 147/3

b² = 49

b = √49

b = 7 m 

lenght = 3b = 3*7

= 21m

:)