Question

The perimeter of rectangle of dimension
30 cm ×12 cm is

a
1) 84cm
2) 72cm²
3) 53 cm​

Answer 1

Answer:

1) 84 cm

Step-by-step explanation:

$The \: perimeter \: of \: rectangle = 2(l + b) \\ = 2(30 + 12) \\ = 2 \times 42 \\ = 84cm$

Answer 2

✫ The perimeter of rectangular dimension is 84 cm. ✫

Step-by-step explanation:

Given: The length of rectangular dimension is 30 cm and the breadth of rectangular dimension is 12 cm.

To find: Perimeter of rectangular dimension

Required Formula: Perimeter of rectangle = 2(l + b).

Then,

$\\ \longmapsto\;\sf{Perimeter _{(rectangle)}= 2(l+b)}\\ \\ \\ \longmapsto\;\sf{Perimeter_{(rectangle)}=2(30+12)}\\ \\ \\ \longmapsto\;\sf{Perimeter_{(rectangle)}=60+24}\\ \\ \\ \longmapsto\;\underline{\boxed{\frak{Perimeter_{(rectangle)}=84\;cm}}}\;\green{\bigstar}$

• Hence,the perimeter of rectangular dimension is 84 cm.