A square is of side 8cm, its area is.
(i) 16cm
(ii) 6.4m
(iii) 64m
(iv) 64cm
Answers
Given:
A square with -
- Side = 8 cm
What To Find:
We have to -
- Find the area of the square.
Formula Needed:
→ Area of square = s²
Required Answer:
→ Option iv which is 64 cm² is correct.
Solution:
- i. 16 cm²
Here we will use the formula,
→ Area of square = s²
Substitute the side and the area (the option),
→ 16 cm² = 8 cm × 8 cm
Solve the RHS,
→ 16 cm² ≠ 64 cm²
∴ Thus, option i. is incorrect.
- ii. 6.4 m²
Here we will convert 6.4 m² to cm²,
→ 6.4 m² = 64000 cm²
Here we will use the formula,
→ Area of square = s²
Substitute the side and the area (the option),
→ 64000 cm² = 8 cm × 8 cm
Solve the RHS,
→ 64000 cm² ≠ 64 cm²
∴ Thus, option ii. is incorrect.
- iii. 64 m²
Here we will convert 64 m² to cm²,
→ 64 m² = 640000 cm²
Here we will use the formula,
→ Area of square = s²
Substitute the side and the area (the option),
→ 640000 cm² = 8 cm × 8 cm
Solve the RHS,
→ 640000 cm² ≠ 64 cm²
∴ Thus, option iii. is incorrect.
- iv. 64 cm²
Here we will use the formula,
→ Area of square = s²
Substitute the side and the area (the option),
→ 64 cm² = 8 cm × 8 cm
Solve the RHS,
→ 64 cm² = 64 cm²
∴ Thus, option iv. is correct.
Answer:
we know that area of square=(side×side)unit
so,according to the question=
(8×8)sq.cm
=64sq.cm
so,required answer=(iv)64cm