Examples of area of plane shapes - page 17 of 129
Number of problems found: 2577
- Paper cut
How many 9 cm² figures can we cut from 36 dm² paper? - Mysterious area
The trapezoid ABCD is given. Calculate its area if the area of the DBC triangle is 27 cm². - Radius
Find the radius of the circle with area S = 200 cm². - Proportion of the continents
The area of Asia and Africa is 8:7, and the area of Europe and Africa is 5:6. In what proportion are the sizes of regions of Asia, Africa, and Europe? - Equilateral triangle
Calculate the area of an equilateral triangle with a circumference of 72cm. - Diagonals of diamond
Find the area and circumference of the diamond ABCD with 15m and 11m diagonals. - Trapezoid - central median
The central median divides the trapezoid into two smaller trapezoids. Find the ratio of its areas. - Triangle
The triangle has known all three sides: a=4.6 m, b=7.4 m, c= 3.8 m. Calculate the area of this triangle. - Inscribed rectangle
The circle area is 231. Determine the area of the inscribed rectangle with one side 13 long. - Trapezium
Find the height of the trapezium ABCD, which has an area 87.5 cm² and base lengths 15 cm and 10 cm. - Silo
The outer perimeter of the silo is 10 m. The concrete wall is 13 cm thick. What is the diameter and area of the inside floor of the silo? - Sequence
The arithmetic sequence is given: Sn=1656, d=6, an=138 Calculate a1 and n. - Triangle
Calculate the area of the right triangle ΔABC if one leg is long 12 and its opposite angle is 47°. - Circle
How big is the area of a circle if its circumference is 51.2 cm? - Rhombus
Calculate the perimeter and area of a rhombus whose diagonals are 21 cm and 44 cm long. - Circumference 72414
Calculate the diagonal and the area of a square if its circumference is 10 centimeters. - The kitchen 2
The kitchen, 5m by 3.5m, has a cupboard covering 2m by 0.75m of the floor. What area of the floor remains uncovered? - Sprinkler 48513
The rotary sprinkler's spray area is 20 m. What area of land can it irrigate from one location? - Circumference 47893
The rectangle has an area of 19.84 cm2, and the longer side of the rectangle measures 62 mm. What is the circumference of a rectangle? - Rectangles 22781
A bricklayer has 48 tiles. How many different rectangles will he assemble?
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