The formula for the area of a circle is A = πr^2, where A is the area and r is the radius of the circle. To find the radius from the diameter, you divide the di Read more Algebra +1 What is the decimal 57 written as a fraction? Asked by Wiki User Oh, what a happy little question! Decimal 57 can be written as the fraction 57/1. You see, a decimal is just a different way of showing a fraction, and situs slot tepercaya in this Read more Math and Arithmetic +1 How do you write the sum of a number k and aimalproduction.com 7? Asked by Wiki User To write the sum of a number k and 7, you would use the mathematical expression k + 7.

This expression represents adding the value of k to 7. In algebraic terms Read more Math and Arithmetic +2 40 x 80 how many sq feet is? Asked by Wiki User To calculate the area in square feet, situs slot tepercaya you need to multiply the two dimensions in feet. In this case, 40 feet multiplied by 80 feet equals 3200 square feet.