Examples of area of plane shapes - page 16 of 125
Number of problems found: 2495
- The playground
The playground is a square with a side of 64 m. It is fenced on three sides. What is the playground area, and how long is the fence? - Parallelogram ABCD
Calculate the area and perimeter of the ABCD parallelogram with side a = 2.7 m, height to side a - va = 0.8 m, and b = 1.9 m. - Area decrease
If the area of the square decreases by 19%, by how much percent does the side of the square decrease? - Cinema 4
In the cinema, there are 1656 seats; in the last row, there are 105 seats; in each next row, there are 3 fewer seats. How many are the total rows in the cinema? - Areaf of ST
It is given square DBLK with side |BL|=13. Calculate the area of the triangle DKU if vertex U lies online LB. - Parallelogram
Calculate the area and perimeter of a parallelogram whose two sides are long a=18 cm b=14 cm and height ha = 2 cm long. - Rhombus
Find the length of the other diagonal and the area of the rhombus. The perimeter of a rhombus is 56 cm, and one of the diagonals is of length 14 cm.
- Diameter 82242
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? - Equilateral 81770
Calculate the area of the circle in which the hole is cut in the shape of an equilateral triangle when the diameter of the circle, d=32mm, and the side of the triangle, a=20.8mm. - Relatively 81129
The sides of the rectangle are relatively 5:4, and the perimeter of the rectangle is 308 dm. Find the area of the rectangle. - Reduced 81099
A square has a side length of 25 cm. How big is its area if the side is reduced by 25%? - Equilateral 80573
The field has the shape of an equilateral triangle. Calculate its area if you know that the side is 280 meters long. - Swimming 78124
A 16 m square swimming pool has an area of 1 m² on the city plan. What is the scale of the city plan? - Circumference 69934
You know the ratio of the circumference of the circle to the area is 4:9. What is the circle's diameter? - Calculate 46541
Calculate the perimeter and the area of a right triangle if a = 6 cm, b = 8 cm, c = 10 cm.
- Rectangular 9401
Matrix E is a rectangular matrix that contains 48 elements and four rows. How many columns does this matrix have? - Inscribed 7018
The dragon has the shape of a regular hexagon inscribed in a circle with a radius of 20 cm. What is the area of the dragon? - Reduced - rectangles
The dimensions of the rectangle are a = 42 cm, and b = 91cm. Determine the perimeter and area of the rectangle, which is reduced in size compared to the original rectangle in the ratio 6:7. - Two conductors
Two conductors have resistance Rs=5 ohms when connected in series and Rp=1.2 ohms when connected in parallel. Calculate the value of the resistors. - Mis Harding
Mis Harding will change her tiles; the yards are 2 1/2 yards and 2 1/2 yards on the side. What is her area A 6 1/4 B 4 1/2 C 8 1/2 D 5 1/4
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