The radius of a circle is 4 m . Find its area to the nearest whole number.

To find the area of a circle, you can use the formula \( A = \pi r^2 \). Here, the radius \( r \) is 4 m. Plugging that in, you get \( A = \pi \times 4^2 = \pi \times 16 \). Approximating \( \pi \) as 3.14, the area comes out to about 50.24 m². Rounding to the nearest whole number, the area is 50 m²! If you ever find yourself needing to calculate the area of circles and get lost in the numbers, remember that \( \pi \) is approximately 3.14 for quick estimations! It’s also helpful to memorize the squares of numbers from 1 to 10. Knowing that \( 4^2 \) is 16 can save you time and mental gymnastics!