Area - practice for 13 year olds - page 5 of 61
Number of problems found: 1210
- Maximum area of rhombus
Calculate the interior angles at which the equilateral rhombus has a maximum area. - Rhombus
Calculate the perimeter and area of a rhombus whose diagonals are 39 cm and 51 cm long. - Centimeters 72134
The area of the square is equal to 1024 square centimeters. Calculate the perimeter of the square and the length of the side a. - Perpendicular 32371
Calculate the area of a rectangular trapezoid whose perpendicular arm is 27 mm long and the bases are 33 mm and 19 mm long. - Proportion 9931
The area of Asia and Africa is 3:2, and the area of Europe and Africa is 3:7. In what proportion are the sizes of Asia, Africa, and Europe? - Circumscribed 7290
Calculate the area of a regular hexagon if the radius of the circle circumscribed is 6.8 cm. - Tool room
A 9' x 15' tool room was enlarged to 11' x 20'. How many square feet of floor space was added? - Rectangle - general expression
Find the area of a rectangle whose width is x-2 units and length of x+4 units. - Square garden
The square garden has an area of 36 square meters. What area will its image have in the 1:60 scale? - Frustrum - volume, area
Calculate the surface and volume of a truncated rotating cone with base radii of 8 cm and 4 cm and a height of 5 cm. - Perimeter of rhombus
The area of the rhombus is 32 cm². One side measures 10 cm. The height on the other side measures 5 cm. What is the circumference of this rhombus? - Regular triangular pyramid
Calculate the volume and surface area of the regular triangular pyramid. The height of the pyramid is 12 centimeters. The bottom edge has 4 centimeters, and the height of the sidewall is 12 centimeters. - Diagonal to area
Calculate the area of a rectangle in which the diagonal length is 10 cm. - Pipe cross section
The pipe has an outside diameter of 1100 mm, and the pipe wall is 100 mm thick. Calculate the cross-section of this pipe. - Cylinder surface area
The volume of a cylinder whose height is equal to the radius of the base is 678.5 dm³. Calculate its surface area. - Cube volume
The cube has a surface of 384 cm². Calculate its volume. - Cube 8
The surface of the cube is 0.54 m². Calculate the length of the cube edge. - Reservoir
6 m long reservoir has a diameter of 2.2 m. What is its surface area in square meters? - Cylinder - basics
Cylinder with base radius r = 54 cm and height h=35 cm. Calculate: a) Area of the base - Garden 81614
The garden is drawn on a scale of 1:200. In what ratio are the real area of the garden and the area of its image?
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