Ratio of perimeters

Rectangle ABCD has dimensions 3 cm and 4 cm, KLMN rectangle has dimensions 4 cm and 12 cm. Calculate the ratio of the perimeter ABCD and perimeter KLMN.

Correct answer:

p =  0.4375

Step-by-step explanation:

$p={\displaystyle \frac{2(a+b)}{2(k+l)}}={\displaystyle \frac{3+4}{4+12}}=0.4375$

Try another example

Related math problems and questions:

• Ratio - rectangle
  The rectangle has dimensions 6 cm and 9 cm. How many times increases area and its perimeter, when its dimensions increase in the ratio 5:3?
• The perimeter 3
  The perimeter of a rectangle is 35 cm. The ratio of the length to its width is 3:2. Calculate the dimensions of the rectangle
• Two squares
  Two squares whose sides are in the ratio 5:2 have a sum of its perimeters 73 cm. Calculate the sum of the area of these two squares.
• Three rectangles
  Some wire is used to make 3 rectangles: A, B, and C. Rectangle B's dimensions are 3/5 cm larger than Rectangle A's dimensions, and Rectangle C's dimensions are again 3/5 cm larger than Rectangle B's dimensions. Rectangle A is 2 cm by 3 1/5 cm. What is the
• A map
  A map of size 60cm by 25cm is reduced in the ratio of 3:5, twice. What are the new dimensions?
• Fence of the garden
  The garden has dimensions of 5m and 400cm. How many meters meshes are needed for fencing the plot?
• Plot
  The plot on which Mr. Kalous is to build a house has the shape of a rectangle. On a 1: 500 scale, its dimensions are 7cm and 5.5cm. Find out the dimensions of the plot. Calculate the parcel size.
• Do you solve this?
  Determine area S of rectangle and length of its sides if its perimeter is 102 cm.
• Rectangle
  The length of one side of the rectangle is three times the length of the second side. What are the dimensions of the rectangle if its circumference 96 cm?
• Windows
  Calculate the masonry area to build a wall with dimensions of 9 m × 4 m with 4 windows of size 64 cm × 64 cm.
• Similar triangles
  The triangles ABC and XYZ are similar. Find the missing lengths of the sides of the triangles. a) a = 5 cm b = 8 cm x = 7.5 cm z = 9 cm b) a = 9 cm c = 12 cm y = 10 cm z = 8 cm c) b = 4 cm c = 8 cm x = 4.5 cm z = 6 cm
• Floor
  Rectangular floor of living room has a length 5.4 meters and a circumference 17.2 meters. What is its width?
• Tablecloth
  The table top is 90 cm long and 50 cm wide. How many cm lace edging is necessary for the tablecloth that hangs on each side by 10 cm?
• The perimeter 2
  The perimeter of the quadrilateral a = 1m b = 14/5m c = 2 3/10m d = 1 4/5m?
• Divide money
  Divide 1200 USD at a ratio of 1:2:3:4:5:6:9:10
• Rectangles
  How many different rectangles with sides integers (in mm) have a circumference exactly 1000 cm? (a rectangle with sides of 50cm and 450cm is considered to be the same as a rectangle with sides of 450cm and 50cm)
• Rope
  Peter has a long rope 2 4/5 meter. Martin has a rope 20 cm longer. What distance ropes achieved if the boys link ropes?