Rectangle - 8th grade (13y) - math problems
Number of examples found: 140
Fencing square playground cost € 464; 1 meter cost € 19. What is the area of the playground?
- Tv screen
The size of a tv screen is given by the length of its diagonal. If the dimension of a tv screen is 16 inches by 14 inches, what is the size of the tv screen?
- Inscribed rectangle
The circle area is 216. Determine the area of inscribed rectangle with one side 5 long.
- Rectangle area
The length of a rectangle of x units is increased by 10% and its width of y units is increased by 15%. What is the ratio of the area of the old rectangle to the area if the new rectangle?
Calculate radius of the Circumscribed circle in the rectangle with sides 20 and 19. It can be rectangle inscribed by circle?
- Perimeter of a rectangle
If the perimeter of a rectangle is 114 meters and the length is twice the width plus 6 meters, what are the length and width?
- Square prism
Calculate the volume of a square prism of high 2 dm wherein the base is: rectangle with sides 17 cm and 1.3 dm
- Building base
Excavation for the building base is 350x600x26000. Calculate its volume in m3.
- Rectangle - sides 4
Perimeter of the rectangle is 72 cm. Calculate the length of the sides that are in the ratio 3:5.
- Enlarged rectangle
The rectangle with dimensions of 8 cm and 12 cm is enlarged in a ratio of 5:4. What are the circumference and the area of the enlarged rectangle?
- Cylinder - basics
Cylinder with base radius r = 45 dm and height h=22 dm. Calculate:
Calculate the surface of the cube ABCDA'B'C'D' if the area of rectangle ACC'A' = 344 mm2.
Can umbrella 75 cm long fit into a box of fruit? The box has dimensions of 390 mm and 510 mm.
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?
Forest has an area of 36 ha. How much area is occupied by forest on the map at scale 1:500?
- The rectangle
Determine the area of the rectangle where the length and width are in the ratio 5:2 and its length is 7.5 cm longer than its width. Determine also its length and its width.
Area of rectangle is 3002. Its length is 41 larger than the width. What are the dimensions of the rectangle?
- Rectangle from string
String 12m. Make rectangle when one side is two times longer than its width.
Calculate the length of the diagonal of the rectangle ABCD with sides a = 8 cm, b = 7 cm.
Diagonal of the rectangle has length 46.4 cm. Angle between diagonal and londer sife of rectangle is 22°. Calculate area of the rectangle.