You are given a piece of cardboard and asked to cut out a square of area (169y2 + 260y + 100) cm2. The side length of the square is ax + b cm, where a and b are whole numbers. Find an expression for the perimeter of the square. Find the perimeter when y = 10 cm.

A. p = 17y + 10; 180 cm

B. p = 68y + 40; 720 cm

C. p = 52y + 40; 560 cm

D. p = 13y + 10; 140 cm

Question

Mathematics

Keith Dunlap

6 December, 22:20

You are given a piece of cardboard and asked to cut out a square of area (169y2 + 260y + 100) cm2. The side length of the square is ax + b cm, where a and b are whole numbers. Find an expression for the perimeter of the square. Find the perimeter when y = 10 cm.

A. p = 17y + 10; 180 cm

B. p = 68y + 40; 720 cm

C. p = 52y + 40; 560 cm

D. p = 13y + 10; 140 cm

+5

Answers (1)

Know the Answer?

Rafael Ferrell · Answer 1

Square root of area = (13y + 10) cm = length of each side of the square piece.

perimeter is

p = 4 (13y + 10)

= 52y + 40 Answer

when y = 10 p = 560 answer

Option C is the correct one.