Question

The area of a rectangular lawn is 255 m². If its length is 15 m, find its perimeter​

Answer 1

Answer:

60m

Step-by-step explanation:

Area of rectangle= L x B

Area= 255

Length= 15

225= 15 x B

B= 225/15

=15

Length= 15m

Breath= 15m

Perimeter= 2l+2b

(15x2)+(15x2)

30+30

=60m

The perimeter of the rectangular lawn in 60m.

Answer 2

$\large {\underline{\boxed{\mathtt\blue{Question}}}}$

The area of a rectangular lawn is 225 m². If its length is 15 m, find its perimeter.​

$\large{\underline {\boxed{\mathtt\pink{Given}}}}$

⇢ Area of rectangle = 225 m²

⇢ length of rectangle = 15 m

$\large{\underline {\boxed{\mathtt\orange{To\:Find}}}}$

⇢ Perimeter

$\large{\underline {\boxed{\mathtt\red{Formulae\:Used}}}}$

⇢ Area of rectangle = L × B

⇢ Perimeter of rectangle =  2 ( L + B )  

$\large{\underline {\boxed{\mathtt{Solution}}}}$    

Substituting the values we have in the formula of area,

⇢ 225 = 15 × B

⇢ B = $\frac{225}{15}$

⇢ B=15 m

Now,

⇢ P = 2 ( L + B )

⇢ P = 2 ( 15 + 15 )  

⇢ P = 2 × 30

⇢ P=60 m      

∴  The perimeter of rectangular lawn is 60 m.