Question

A rectangle has an area of 36cm^ and width of 3cm. Find the length and perimeter

Answer 1

it's length will be 12cm and perimeter will be

$2(12 + 3) \\ 2 \times 15 \\ = 30cm$
hope this is your answer

Answer 2

Easy Pezy....
Area of rectangle = length × breadth
therefore, put values..
36=length × 3
length =
$\frac{36}{3} = 12$

so length = 12cm
so Perimeter = 2(l+b)
2(12+3)
=2(15)
=30cm