Question

A rectonale has an area of36cm and width 3cm. Find it's perimeter.​

Answer 1

It is 29 hope this helps

Answer 2

Answer:

$\boxed{ \bold {\huge{ \text{30 \: cm}}}}$

Step-by-step explanation:

$\star{ \sf{ \underline{ \: \: Given}}}$

Area of a rectangle ( A ) = 36 cm²

Width of a rectangle ( w ) = 3 cm

$\star{ \sf{ \underline{ \: \: To \: Find}}}$ :

Perimeter of a rectangle ( P ) = ?

First, finding the length of a rectangle ( l ) :

$\boxed{\text{area \: of \: a \: rectangle = length ∗ width}}$

$\dashrightarrow{ \sf{36 = length \times 3}}$

$\dashrightarrow{ \sf{36 = 3 \: length}}$

$\dashrightarrow{ \sf{3 \: length = 36}}$

$\dashrightarrow{ \sf{ \frac{3 \: length}{3} = \frac{36}{3} }}$

$\dashrightarrow{ \sf{length = 12 \: cm}}$

Length of a rectangle = 12 cm

Now, finding the perimeter of a rectangle having length of 12 cm and width of 3 cm

$\boxed{ \text{perimeter \: of \: a \: rectangle = 2(l + w)}}$

${ \sf{perimeter \: of \: a \: rectangle = 2(12 + 3)}}$

$\dashrightarrow{ \sf{perimeter \: of \: rectangle = 2 \times 15}}$

$\dashrightarrow{ \sf{perimeter \: of \: rectangle = 30 \: cm}}$

Perimeter of a rectangle = 30 cm

Hope I helped!

Best regards! :D