Varies directly as the square of the diameter square means to multiply by itself or x^2 that means k=x/y in this case x=15 y=10^2 k=15/10^2=15/100=3/20 so the new pizza is k=x/16^2 k=3/20 3/20=x/16^2 evaluate 16^2 3/20=x/256 multiply both sides by 256 768/20=x 384/10=x 38.4=x she should put about 38 slises
Let the breadth be x m. So, length = 4x m. Area of the rectangle = 1936m sq. So, 4x × x = 1936 4x^2 = 1936 x^2 = 1936/4 x^2 = 484 x = √484 x = √22×22 x = 22 Hence, breadth = 22m. Length = (4×22)m = 88m.