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?
- Height
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
- Radius
Determine the radius of the circle, if its perimeter and area is the same number.
- Square
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
- OPT
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.
- Parallelogram
The parallelogram has sides lengths in the ratio 3: 4 and perimeter 2.8 meters. Determine the lengths of the sides.
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