Examples of area of plane shapes - page 16 of 131
Number of problems found: 2601
- A rectangular patio
A rectangular patio measures 20 ft by 30 ft. By adding x feet to the width and x feet to the length, the area is doubled. Find the new dimensions of the patio. - Isosceles trapezium
Calculate the area of an isosceles trapezium ABCD if a = 10cm, b = 5cm, c = 4cm. - Pipe cross section
The pipe has an outside diameter of 1100 mm, and the pipe wall is 100 mm thick. Calculate the cross-section of this pipe. - Diagonals of a rhombus
One of the diagonals of a rhombus is twice the other. If the sum of the lengths of the diagonals is 24, find the area of the rhombus. - Trapezium 2
The trapezium has an area of 24 square cm. How many different trapeziums can be formed? - 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. - Folded square
ABCD is a square. The square is folded on the midpoint of AB, and A is folded onto the fold, creating a shaded region. The perimeter of the shaded figure is 75. Find the area of square ABCD - Area of square
Calculate the area of the square whose perimeter is 24 dm. - 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 - Circle - simple
Calculate the area of a circle in dm² if its circumference is 31.4 cm. - Annulus
Two concentric circles form an annulus with a width of 10 cm. The radius of the smaller circle is 20 cm. Calculate the area of the annulus. - Area of ditch
How great will an area have a section of the trapezoidal ditch with a width of 1.6 meters above and below 0.57 meters? The depth of the ditch is 2.08 meters. - Euklid4
The legs of a right triangle have dimensions 241 m and 34 m. Calculate the length of the hypotenuse and the height of this right triangle. - Rhombus
The rhombus with area 95 has one diagonal that is longer by 7 than the second one. Calculate the length of the diagonals and rhombus sides. - Strip
From 3 cm wide strip should be cut rhombus with area 16 cm². How long will it be on its side? - Rhomboid
Calculate the circumference and area of the rhomboid with sides 19 and 20, with their angle 40°. - Triangle
Calculate the triangle's heights ABC if the triangle's sides are a=26, b=81, and c=73. - Rectangle - sides ratio
Calculate the area of a rectangle whose sides are in ratio 2:16 and the perimeter is 1289. - Rectangular 71334
How many m² of flooring is needed in a rectangular room measuring 3.5 m and 4.5 m? - Calculate 25621
Calculate the area of a regular hexagon inscribed in a circle with a radius r = 7 cm.
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