Question

Mauri measures the width of her classroom to the nearest hundredth of a foot and finds that the width is 21.25 ft. Ali measures the length of the classroom to the nearest foot and finds that the length is 41 ft. Use the correct number of significant digits to write the area of the classroom.

a) 894.25 ft²
b) 891.25 ft²
c) 892 ft²
d) 890 ft²

Answer 1

The area of the classroom is 871.25 ft².

Step-by-step explanation:

The area of a rectangular room is calculated by multiplying its length and width. In this case, the length is given as 41 ft and the width is given as 21.25 ft. To find the area, multiply these two values:

Area = Length × Width

Area = 41 ft × 21.25 ft

Area = 871.25 ft²

When calculating the area, we should use the correct number of significant digits. Since the width is given to the nearest hundredth of a foot, our final answer should be rounded to two decimal places, giving us an area of 871.25 ft².