Question

side of a square is 3×10^4 meters it's area is​

Answer 1

SOLUTION

TO CHOOSE THE CORRECT OPTION

Side of a square is 3 × 10⁴ meters it's area is

A. 6 × 10⁴ m²

B. 9 × 10⁴ m²

$\sf C. \: 9 \times {10}^{8} \: \: {m}^{2}$

$\sf D. \: 9 \times {10}^{16} \: \: {m}^{2}$

EVALUATION

Here it is given that the Side of the square is 3 × 10⁴ meters

Hence the required area of the square

= ( Side)²

$\sf{ = {(3 \times {10}^{4} )}^{2} \: \: {m}^{2} }$

$\sf{ = {3}^{2} \times {( {10}^{4} )}^{2} \: \: {m}^{2} }$

$\sf{ = 9 \times {10}^{4 \times 2} \: \: {m}^{2} }$

$\sf{ = 9 \times {10}^{8} \: \: {m}^{2} }$

FINAL ANSWER

Hence the correct option is $\sf C. \: 9 \times {10}^{8} \: \: {m}^{2}$

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Answer 2

Step-by-step explanation:

SOLUTION

TO CHOOSE THE CORRECT OPTION

Side of a square is 3 × 10⁴ meters it's area is

A. 6 × 10⁴ m²

B. 9 × 10⁴ m²

$\sf C. \: 9 \times {10}^{8} \: \: {m}^{2}$

$\sf D. \: 9 \times {10}^{16} \: \: {m}^{2}$

EVALUATION

Here it is given that the Side of the square is 3 × 10⁴ meters

Hence the required area of the square

= ( Side)²

$\sf{ = {(3 \times {10}^{4} )}^{2} \: \: {m}^{2} }$

$\sf{ = {3}^{2} \times {( {10}^{4} )}^{2} \: \: {m}^{2} }$

$\sf{ = 9 \times {10}^{4 \times 2} \: \: {m}^{2} }$

$\sf{ = 9 \times {10}^{8} \: \: {m}^{2} }$

FINAL ANSWER

Hence the correct option is $\sf C. \: 9 \times {10}^{8} \: \: {m}^{2}$