Question

A garbage collector has two different nets. Find the difference between the areas of the nets.

• A. $2.19991\times {10}^8{\text{inches}}^2$
• B. $21.9991\times {10}^8{\text{inches}}^2$
• C. $2199.91\times {10}^8{\text{inches}}^2$
• D. $2.19991\times {10}^4{\text{inches}}^2$

Answer 1

The correct option is A $2.19991\times {10}^8{\text{inches}}^2$

We can find the difference between the areas of the nets by subtracting the small net's area from the big net's area.

Difference in area
= Area of the big net - Area of the small net
= $2.2\times {10}^8-0.9\times {10}^4$
= $22000\times {10}^4-0.9\times {10}^4$
= $(22000-0.9)\times {10}^4$
= $21999.1\times {10}^4$
= $2.19991\times {10}^8$

Therefore, the area of the floor is $2.19991\times {10}^8{\text{inches}}^2$.