Perimeter - 8th grade (13y) - math problems
Number of problems found: 225
- Perimeter of the circle
Calculate the perimeter of the circle in dm, whose radius equals the side of the square containing 0.49 dm2?
- Square - increased perimeter
How many times is increased perimeter of the square, where its sides increases by 150%? If the perimeter of square will increase twice, how much% increases the content area of the square?
- Perimeter of a rectangle
If the perimeter of a rectangle is 114 meters and the length is twice the width plus 6 meters, what are the length and width?
- Parallelogram perimeter
The ABC triangle with sides a = 5cm, b = 3cm, c = 40mm has the center of the sides of the K,L,M. How many cm have the KBLM parallelogram perimeter?
Calculate height of the equilateral triangle if its perimeter is 8?
- Equilateral triangle v2
Equilateral triangle has a perimeter 36 dm. What is its area?
- Area to perimeter
Calculate circle circumference if its area is 254.34cm2
Determine the radius of the circle, if its perimeter and area is the same number.
Calculate the perimeter and the area of square with a diagonal length 30 cm.
- Cross five
The figure on the picture is composed of the same squares and has a content of 45cm². What's its perimeter?
- Find the
Find the radius of the circular base of the vessel, whose perimeter is 2.51 m. Write the result to one decimal place in meters. Via the π sign - Ludolph's number
- Perimeter and legs
Determine the perimeter of a right triangle if the length of one leg is 75% length of the second leg and its content area is 24 cm2.
- Trapezoid ABCD
Calculate the perimeter of trapezoid ABCD if we know the side c=15, b=19 which is also a height and side d=20.
- A rectangle's
A rectangle's length is 3 times more than twice its width. If the perimeter of the rectangle is 60 feet. What is the length of the rectangle
What is the perimeter of a right triangle with the legs 14 cm and 21 cm long?
- Square diagonal
Calculate the length of the square diagonal if the perimeter is 172 cm.
- Perimeter of circle
Calculate the circumference of described circle to the triangle with sides 9,12,15 cm.
- Rhombus HP
Calculate area of the rhombus with height 24 dm and perimeter 12 dm.
- Rectangle - sides 4
Perimeter of the rectangle is 72 cm. Calculate the length of the sides that are in the ratio 3:5.
The parallelogram has sides lengths in the ratio 3: 4 and perimeter 2.8 meters. Determine the lengths of the sides.
Perimeter - math problems. Examples for 8th grade.