Question

The dimensions of a rectangular-shaped playground measure 2⋅102 centimeters long by 9⋅102 centimeters wide.

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​Find the approximate area of the playground.
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​Write your answer in scientific notation and round coefficients to the nearest tenth.
Options
A.) 2.5 x 10^5
B.) 1.4 x 10^4
C.) 1.8 x 10^5
D.) 2.5 x 10^2
E.) 1.2 x 10^5
F.) 11.8 x 10^4

Answer 1

C.)
`1.8*10^5\ cm^2`

Explanation:

-The area of a rectangle is given by the product of it's length and width.

-Given the length is 9⋅10^2 cm and the width is 2.10^2 cm, the area can be calculated as:

`A=lw\\\\=(2* 10^2)*(9* 10^2)\\\\=1.8* 10^5\ cm^2`

Hence, the rectangle has an area of
`1.8*10^5\ cm^2`