Question

2. Find the area of a rectangle for x = 3, wh
ose breadth is 2x and length is square of the breadth.​

Answer 1

x = 3

breadth = 2x

= 2 ×3

= 6

length = square of the breadth

= 6²

= 36

Area of rectangle = length × breadth

= 36 × 6

= 216 square units

Answer 2

GivEn:

• Breadth (b) = 2x
• Length (l) = (2x)² = 4x²
• Value (x = 3)

To Find:

• Area of the Rectangle?

Formula Used:

$\\ \bigstar{\underline{\boxed{\sf\green{ Area_{(Rectangle)} = l \times b }}}}$

Solution:

After putting in Equation;

$\colon\implies{\sf{ A = lb }} \\ \\ \colon\implies{\sf{ A = 2x \times 4x^2 }} \\ \\ \colon\implies{\sf{ A = 8x^3 }}$

After putting exact value of x in Equation;

$\colon\implies{\sf{ A = 8 \times (3)^3 }} \\ \\ \colon\implies{\sf{ A = 8 \times 27 }} \\ \\ \colon\implies{\sf\bold\red{ Area = 216 }}$

Hence,

The area of Rectangle is 216.