# Area of shape + expression of a variable from the formula - math problems

#### Number of problems found: 251

- Square to rectangle

What is the ratio of the area of a square of side x to the area of a rectangle of a rectangle of width 2 x and length 3 - Circle

How big is an area of a circle if its circumference is 80.6 cm? - Diagonals of diamond

Find the area and circumference of the diamond ABCD with 15m and 11m diagonals. - Area and perimeter of rectangle

The content area of the rectangle is 3000 cm^{2}, one dimension is 10 cm larger than the other. Determine the perimeter of the rectangle. - Hexagon ABCDEF

In the regular hexagon ABCDEF, the diagonal AE has a length 8cm. Calculate the circumference and the hexagon area. - Isosceles right triangle

Area of an isosceles right triangle is 18 dm^{2}. Calculate the length of its base. - Tereza

The cube has an area of base 256 mm^{2}. Calculate the edge length, volume, and area of its surface. - Garden

Trapezoid garden has parallel sides 19 m and 24 m. Its area is 193.5 square meters. What is the width of the garden? - Equilateral triangle vs circle

Find the area of an equilateral triangle inscribed in a circle of radius r = 9 cm. What percentage of the circle area does it occupy? - Isosceles trapezium

Calculate the area of an isosceles trapezium ABCD if a = 10cm, b = 5cm, c = 4cm. - Pilot

How high is the airplane's pilot to see 0.001 of Earth's surface? - Diagonals of a rhombus

One of the diagonals of a rhombus is twice as the other. If the sum of the lengths of the diagonals is 24, find the area of the rhombus. - RT 11

Calculate the area of right tirangle if its perimeter is p = 45 m and one cathethus is 20 m long. - Rhombus 2

Calculate the rhombus area, which has a height v=48 mm and shorter diagonal u = 60 mm long. - 7 triangle

The triangle area is 26.7 cm^{2}. Determine the side length l if appropriate height h_{l}= 45.3 cm. - Square s3

Calculate the diagonal of the square, where its area is 0.49 cm square. And also calculate its circumference. - Right isosceles triangle

What can be the area of a right isosceles triangle with a side length of 8 cm? - Square and rectangle

Calculate the side of a square which content area equals area of the rectangle having a length of 3 cm greater and by 2 cm smaller than the side of the square. - Rectangular triangle

The lengths of the rectangular triangle sides with a longer leg of 12 cm form an arithmetic sequence. What is the area of the triangle? - Rectangle

Calculate area of the rectangle if its length is 12 cm longer than its width and length is equal to the square of its width.

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