Question

the area of rectangle is 180 cm square and its length is 15 cm find its breadth and perimeter​

Answer 1

Area Of Rectangle:- Lenght × Breadth.

Area Of Rectangle:- Lenght × Breadth.180= 15 × B

Area Of Rectangle:- Lenght × Breadth.180= 15 × BB= 180/15

Area Of Rectangle:- Lenght × Breadth.180= 15 × BB= 180/15B= 12 cm

Check

Area Of Rectangle:- Lenght × Breadth.

=> 15×12

=> 180 cm

Answer 2

$\large \bf \underline{ \underline{Given:}}$

• Area of rectangle=180cm²
• Length=15cm

$\large \bf \underline{ \underline{To\:Find:}}$

• Breadth of rectangle
• Perimeter of rectangle

$\large \bf \dagger \: \underline{ \underline{ Solution:}}$

$\bf Area \: of \: rectangle=180cm² \\ \\ \sf Length×Breadth=180cm² \\ \\ \sf15×breadth=180cm²$

$\sf breadth = \cancel \frac{180}{15}cm \\ \\ \large \boxed { \bf\red {⇢breadth = 12cm}}$

So breadth of rectangle is 12 cm

______________________

$\bf Perimeter \: of \: rectangle=2(l + b) \\ \\ \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\! \sf⇢2(15 + 12) \\ \\ \!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \sf⇢ 2(27) \\ \\\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\!\!\!\!\! \!\!\!\!\!\! \large\boxed{ \sf \purple{⇢54 cm}}$

Perimeter of rectangle is 54cm

$\underline{ \underline{ \large \bf Formula \: used:}}$

• Area of rectangle=l×B
• Perimeter of rectangle=2(l+B)

Here l and B are length and breadth of rectangle.