Examples of area of plane shapes - page 20 of 135
Number of problems found: 2697
- Circle area
Find the area of the circle that is a) inscribed, b) described 6.32 cm². - Rectangle
Calculate the area of the rectangle if its length is 12 cm longer than its width and length is equal to the square of its width. - Circle radius
Calculate the circle's radius if the circumference and area are in a 2:5 ratio. - Hectares
The rectangular land is 350 m long and 200 m wide. Calculate the area in hectares. - Height ratio
In a general triangle, the aspect ratio a: b = 2:3. What is the ratio of heights va: vb? - Playground area
The fencing of the square playground cost € 462, while the 1 m fencing cost € 11. What is its playground area? - Square area
ABCD square has a diagonal length of 8 cm. What is the area of the square? - Acreage
What acreage has a rectangular plot whose diagonal is 34 meters long, and one side has a length of 16 meters? ... - Difference AP
Calculate the difference of arithmetic progression if the sum of its first 10 members Sn = 1325 and the first member is a1 = 20 - Equilateral triangle v2
An equilateral triangle has a perimeter 36 dm. What is its area? - Right triangle ABC
Calculate the perimeter and area of a right triangle ABC. If you know the length of the legs, 4 cm, 5.5 cm, and 6.8 cm are the hypotenuse. - The star
Find the area of the shaded part of a square with a side of 22 cm. - CD disc
A compact disc has a diameter of 11.8 cm. What is its surface area in square centimeters? - Right angled
We built a square with the same area as the right triangle with legs 17 cm and 17 cm. How long will be the side of the square? - Series
Your task is to express the sum of the following arithmetic series for n = 24: S(n) = 11 + 13 + 15 + 17 + ... + 2n+9 + 2n+11 - Square
If we increase the side of the square, increase its area of 50%. What is the percentage we increase the side of the square? - Triangle
Calculate all three altitudes of triangle ABC with sides a = 26, b = 81, and c = 73. - Square rectangle side
A square in a grid contains 36 squares. This is one-fifth of the number of squares of a rectangle whose side is 30 squares long. What is the length of the other side of the rectangle? Thank you - Triangle Side Calculation
Calculate the side a of triangle ABC if we know va=8 cm, b=16 cm, vb=10 cm. - Pool terrace area
Around the circular pool with a diameter of 5.5 m is a circular wooden terrace with a width of 130 cm. What is the area size of this terrace?
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