The diameter of a circle. is 8 inches what is the area please hurry im timed

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

You can find the constant of proportionality by finding the ratio of

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?