# Area - 8th grade (13y) - math problems

#### Number of problems found: 673

- Mysterious area

The trapezoid ABCD is given. Calculate its area if the area of the DBC triangle is 27 cm^{2}. - Screens

The area of a 25 inch TV screen is 300 inch² the area of a 40 inch TV screen is 768 inch². The area of the smaller screen is what percent of the area of the larger screen? - Area to perimeter

Calculate circle circumference if its area is 254.34cm^{2} - In the

In the national park, the ratio of the wooded area to grassland is 4: 1. The total area is 385km^{2}. What area is wooded? - Alaska vs Montana

Alaska is the largest state in the United States and has a surface area of approximately 588,000 square miles. Montana has a surface area that is approximately 25% of the surface area of Alaska. What is the approximate surface area of Montana? - Cllub flag

The children had the club flag sewn on. The red color covered 2/20 of the total area of the flag, the blue area a fifth, the yellow 19% of the total area. What% is the green area occupied? - Content area and percents

Determine what percentage is smaller cube surface, when the surface area of the wall decreases by 25%. - Inscribed rectangle

The circle area is 216. Determine the area of inscribed rectangle with one side 5 long. - Diagonal to area

Calculate the area of a rectangle in which the length of the diagonal is 10 cm. - Cylinder surface area

Volume of a cylinder whose height is equal to the radius of the base is 678.5 dm^{3}. Calculate its surface area. - Volume from surface area

What is the volume of the cube whose surface area is 96 cm^{2}? - Surface area

The volume of a cone is 1000 cm^{3}and the content area of the axis cut is 100 cm^{2}. Calculate the surface area of the cone. - Maximum area of rhombus

Calculate the interior angles at which equilateral rhombus has a maximum area. - Area to volume

If the surface area of a cube is 486, find its volume. - Conical area

A right angled triangle has sides a=12 and b=19 in right angle. The hypotenuse is c. If the triangle rotates on the c side as axis, find the volume and surface area of conical area created by this rotation. - Map

Forest has an area of 36 ha. How much area is occupied by forest on the map at scale 1:500? - Cube walls

Find the volume and the surface area of the cube if the area of one of its walls is 40 cm^{2}. - Circles

Area of circle inscribed in a square is 14. What is the area of a circle circumscribed around a square? - Area of a cube

Calculate the surface area of a cube if its volume is equal to 729 cubic meters. - Volume and area

What is the volume of a cube which has area of 361 cm^{2}?

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