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

Number of problems found: 442

• 7 triangle
The triangle area is 26.7 cm2. Determine the side length l if appropriate height hl = 45.3 cm.
• Tereza
The cube has an area of base 256 mm2. Calculate the edge length, volume, and area of its surface.
• Cylinder
The cylinder surface is 922 dm2. 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 cm2. What is its perimeter?
• Rectangular cuboid
The rectangular cuboid has a surface area 5334 cm2, 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 cm3 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.
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 cm2. 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 m2.
• Arc and segment
Calculate the length of circular arc l, area of the circular arc S1 and area of circular segment S2. 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 mm2. 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 mm2. Calculate its perimeter if perimeter is the smallest possible.
• Rhombus problem
The perimeter of the rhombus is 268 m, and its area is 2278 m2. Calculate the height of the rhombus.

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