Examples of area of plane shapes - page 22 of 129

Number of problems found: 2563

Hectares 31661
Express the yield per hectare of sugar beet when you know that we can harvest 20 tons of sugar from 20 hectares of fields.
Flowerbed 25241
How large should we sow an area with grass in a circular flowerbed with a radius of 4m?
Calculate 14733
Square has the side a = 12 cm. Calculate the area of a triangle in the square.
Rectangular 14333
The rectangular plot has an area of 200 square meters. The length of the land is 20 meters. How wide is the land?
Circumference 9442
The circumference of the rectangle is 28 cm, and one side measures 64 mm. Calculate the area of this rectangle.
Trapezoid 5559
The bases of the trapezoid are 12 cm and 8 cm long. The area of this trapezoid is 40 cm². What is its height?
22/7 circle
Calculate approximately the area of a circle with a radius 12 cm. When calculating π, use 22/7.
Rhombus HP
Calculate the area of the rhombus with height 48 cm and perimeter 64 cm.
Fountain
Around a circular fountain with a diameter of 2m, there is a 0.5m wide strip of land for planting roses. How many m² of land do roses occupy?
Dimensions - rectangle
One side of the rectangle is 12 cm longer than the other. If we reduce each dimension by a third, the area of the rectangle will be reduced by 60 cm². Determine the dimensions of the rectangle.
Right-angled - legs
The lengths of legs are a = 7.2 cm and b = 10.4 cm in the right-angled triangle ABC. Calculate: a) lengths of the sections of the hypotenuse b) height to the hypotenuse c
The area 2
The area of a rectangular piece of tablecloth is 3/4 m². Its width is 3/10 m. What is its length?
Parallelogram - sides
A parallelogram has a perimeter of 30 cm and heights of 10 cm and 6 cm. Find the lengths of its sides.
Rectangle - area and width
The length of the rectangle is 1 cm more than its width. Its area is 4 cm². What is its width?
The length 11
The length of a rectangle is four times its width. If the area is 100 m², what is the length of the rectangle?
Inscribed circle
A circle is inscribed in the triangle with sides of 13 cm, 14 cm, and 15 cm. What is its radius?
A pressure
How much compressive force does an aquarium with a bottom area of 0.24 m² exert on the table when a pressure of 3 kPa is created?
Rectangles - integers
How many different rectangles with integer side lengths have an area S = 60 cm²?
Isosceles trapezoid
Find the area of an isosceles trapezoid with bases of 8cm and 72mm. The height of the trapezoid is equal to three-quarters of the longer base.
Isosceles trapezoid
Find the area of an isosceles trapezoid; if the bases are 12 cm and 20 cm, the arm's length is 16 cm.

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