Question

*If Raj calculates the area of ​​a square with a side of 1.2 cm instead of the area of ​​a square with a side of 2.1 cm, then what is the difference between his answers?*

1️⃣ 4.41 sq.cm.
2️⃣ 3.21 sq.cm.
3️⃣ 2.97 sq.cm.
4️⃣ 2.67 sq.cm.​

Answer 1

Answer:

2.97 cm²

Step-by-step explanation:

1st, we need to find area of square with side 2.1 cm

Area of square = a²

So, 2.1² = 4.41 cm²  

2nd, we need to find area of square with side 1.2 cm

Area of square = a²

So, 1.2² = 1.44

Now, we need to find the difference:

4.41 - 1.44 = 2.97 cm²

therefore, the answer is:

3️⃣ 2.97 cm²

_________________________

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Answer 2

Question :- If Raj calculates the area of a square with a side of 1.2 cm instead of the area of a square with a side of 2.1 cm, then what is the difference between his answers ?

A) 14.41 sq.cm.

B) 3.21 sq.cm.

C) 2.97 sq.cm.

D) 2.67 sq.cm.

Solution :-

we know that,

• Area of square = (side)² .

so,

→ Area of square with side as 1.2 cm = (1.2)² = 1.44 cm².

and,

→ Area of square with side as 2.1 cm = (2.1)² = 4.41 cm².

therefore,

→ Difference between area = 4.41 - 1.44 = 2.97 cm². (C) (Ans.)

LEARN MORE :-

*If the sum of three consecutive positive integers is 45, which is the largest number of them?*

1️⃣ 14

2️⃣ 18

3️⃣ 16

4️...

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