Perimeter - 5th grade (10y) - examples
- Two squares
Two squares whose sides are in the ratio 5:2 have sum of its perimeters 73 cm. Calculate the sum of area this two squares.
The floor area of the room is 31 m2 and has a width of 4.3 m. How many centimeters of circumference measured floor on the map at the scale 1:75?
- Square grid
Square grid consists of a square with sides of length 1 cm. Draw in it at least three different patterns such that each had a content of 6 cm2 and circumference 12 cm and that their sides is in square grid.
Find the length of each side of rhombus if the perimeter is 49 dm long.
Draw a regular hexagon inscribed in a circle with radius r=8 cm. What is its perimeter?
- Garden plot
Calculate how many meters of fence need to fence the square garden with length and width of 22 meters.
- Do you solve this?
Determine area S of rectangle and length of its sides if its perimeter is 102 cm.
The garden has the square shape with circumference 124 m. Divide it into two rectangular gardens, one should circumference 10 meters more than the second. What size will have a gardens?
Rectangular playground is fenced with 38 m long netting. Its width is 7 m. Calculate its length.
Calculate perimeter of the rectangle with sides a=2.4 m and b=1.9 m.
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?
Cellar for storing fruit has a rectangular base with sides 14 m and 7 meters. You should paint sidewall to 2 m. How m2 surface must be painted?
- 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.
Rectangular floor of living room has a length 5.4 meters and a circumference 17.2 meters. What is its width?
How many meters of fencing it is required to purchase if our garden is rectangular measuring 20 m and 180 dm.
- MO-Z5-3-66 tiles
The picture shows a square tiles with side 10 dm which is composed of four identical small rectangles and squares. Circumference of small square is five times smaller than the circumference of the entire tile. Determine the dimensions of the rectangle.
- Area of square
Calculate the content area of the square whose perimeter is 24 dm.
- Triangle ABC
In a triangle ABC side b measure 10 cm less than the side a and side b is half of the side c. Calculate the length of sides if the circumference of the triangle is 42 cm.
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?
Square garden has an area of 537 m2. How many meters netting is necessary to fence the garden?