Question

The area of a telescope lens is 6.668 × 103 mm2. What is the area in square feet (ft2)? Enter your answer in scientific notation

Answer 1

`7.13* 10^(-2)\ ft^2`

Step-by-step explanation:

The area of a telescope lens is 6.668 × 10³ mm²

We need to convert the area in ft².

We know that,

`1\ mm^2=1.07* 10^(-5)\ ft^2`

It means,

`6.668 * 10^3\ mm^2=6.668 * 10^3* 1.07* 10^(-5)\ ft^2\\\\=0.0713\ ft^2`

or

`0.0713\ ft^2=7.13* 10^(-2)\ ft^2`

So, the required answer is
`7.13* 10^(-2)\ ft^2`.