Question

Find the length of a rectangular Park which is 45 metre wide and has perimeter of 240 meter

Answer 1

$\huge\mathbb{SOLUTION:-}$

$\bf{Given:-}\begin{cases}\sf{Perimeter\:of\:park=240m}\\ \sf{width=45m}\end{cases}$

$\huge\star{\sf{\red{To\:Find:-}}}$

• The length of park
• The park is in the form of rectangle
• So the perimeterof rectangle

$\boxed{\sf{perimeter\:of\: rectangle=2(l+b)}}$

$\sf\implies 2(l+45)=240\\ \\ \sf\implies 2l+90=240\\ \\ \sf\implies 2l=240-90\\ \\ \sf\implies 2l=150\\ \\ \sf\implies l=\cancel{\frac{150}{2}}\\ \\ \sf\implies length =75$

• The length of park is 75 m

$\underline{\star{\boxed{\sf{Length=75m}}}}$

Answer 2

perimeter of rectangular Park = 240 m

breadth of Park = 45 m

perimetre of rectangle = 2(l+b)

240 = 2( l + 45 )

240 = 2x + 90

240-90 = 2x

150 = 2x

150/2 = x

75 =x

Length = 75 m