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

#### Number of problems found: 442

- 7 triangle

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

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

The cylinder surface is 922 dm^{2}. Its height is equal to the radius of the base. Calculate the height of this cylinder. - R Trapezium

Rectangular trapezium has bases 21 and 10 and area 92 cm^{2}. What is its perimeter? - Rectangular cuboid

The rectangular cuboid has a surface area 5334 cm^{2}, and its dimensions are in the ratio 2:4:5. Find the volume of this rectangular cuboid. - Cone

Circular cone of height 15 cm and volume 5699 cm^{3}is at one-third of the height (measured from the bottom) cut by a plane parallel to the base. Calculate the radius and circumference of the circular cut. - Right Δ

A right triangle has the length of one leg 11 cm and the hypotenuse 61 cm size. Calculate the height of the triangle. - Radius

Determine the radius of the circle if its perimeter and area is the same number. - Cone A2V

The surface of the cone in the plane is a circular arc with central angle of 126° and area 415 cm^{2}. Calculate the volume of a cone. - Right isosceles

Calculate area of the isosceles right triangle which perimeter is 26 cm. - Pipe

How long is the pipe with an outside diameter of 0.87 m if his coloring consumed 10 kg of color. 1 kg of color coverage is 6 m^{2}. - Arc and segment

Calculate the length of circular arc l, area of the circular arc S_{1}and area of circular segment S_{2}. Radius of the circle is 11 and corresponding angle is (2)/(12) π. - Heron backlaw

Calculate missing side in a triangle with sides 25 and 13 and area 152. - Circle

How big is an area of a circle if its circumference is 51.2 cm? - Cap

Jesters hat is shaped by a rotating cone. Calculate how much paper is needed to the cap 54 cm high when the head circumference is 47 cm. - Right triangle

Legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle. - Sphere A2V

The surface of the sphere is 241 mm^{2}. What is its volume? - 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? - Shape

Plane shape has a maximum area 677 mm^{2}. Calculate its perimeter if perimeter is the smallest possible. - Rhombus problem

The perimeter of the rhombus is 268 m, and its area is 2278 m^{2}. Calculate the height of the rhombus.

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Area - math word problems. Expression of a variable from the formula - math word problems.