I need step by step on how to get 19.576 when you do 3.2 + 1.7 * 1.7 * 1.7 / 1.8 * 6​

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

The surface area of the triangular prism is .

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?