Question

A square is of side 8cm, its area is.
(i) 16cm
(ii) 6.4m
(iii) 64m
(iv) 64cm​

Answer 1

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 2

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