The perimeter of a rectangle is 15.2 km, and it's area is 11.88 km^2. find it's length and width

Let P be the perimeter of a rectangle and A its area. Let W and L be, respectively, the width and length of the rectangle. Find W and L in terms of P and A. 

solution:

P = 2 * W + 2 * L    (1) 

and 

A = W * L    (2) 

solve equation (1) for W: 

W = P / 2 - L 

and W by P / 2 - L in A = W * L to obtain 

A = L * (P / 2 - L) 

Rewrite as a standard quadratic equation in L 

L^2 - L (P / 2) + A = 0 

Solve the above equation for L and find W using W = P / 2 - L. 

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

answer: 5100 just subtract

step-by-step explanation: