Question

Which of the rectangles below have an area of 18 cm²?

5 cm
C
3 cm
A
6 cm
4 cm
↑
2 cm
B
9 cm
9 cm
D
◄2 cm

Answer 1

`\textsf{Rectangle A}`

`\implies \mathsf {Area = 3 * 6 = 18cm^(2)}`

`\implies \bf {Yes}`

`\textsf {Rectangle B}`

`\implies \mathsf {Area = 2 * 9 = 18cm^(2)}`

`\implies \bf {Yes}`

`\textsf {Rectangle C}`

`\implies \mathsf {Area = 5 * 4 = 20cm^(2)}`

`\textsf {Rectangle D}`

`\implies \mathsf {Area = 9 * 2 = 18cm^(2)}`

`\implies \bf {Yes}`

Answer 2

Explanation:

Let's solve one by one in order to get which has an area of 18cm²

We know that,

• Ar(Rectangle) = l*b

We'll use this formulae.

Rectangle A:

• l*b
• (6*3)cm²
• 18 cm²

Rectangle B:

• l*b
• (9*2)cm²
• 18 cm²

Rectangle C:

• l*b
• (5*4)cm²
• 20 cm²

Rectangle D:

• l*b
• (9*2)cm²
• 18 cm²

Hence, Rectangle A,B and D Has an area of 18cm².