Area - practice for 12 year olds - page 50 of 51
Number of problems found: 1018
- Garden
The square garden area is 2/9 of triangle garden with sides 160 m, 100 m, and 100 m. How many meters of fencing need to fence a square garden? - Gutter
How much metal is needed to produce 60 pieces of gutter pipes with the diameter 17 cm and length of 6 m? The plate bends add 6% of the material. - Cylinders
The area of the side of two cylinders is the same rectangle of 33 mm × 18 mm. Which cylinder has a larger volume, and by how much? - Two squares
Two squares with sides in the ratio 5:2 have a sum of their perimeters 73 cm. Calculate the sum of the area of these two squares.
- Rectangular cuboid
The rectangular cuboid has a surface area 5447 cm², and its dimensions are in the ratio 2:4:1. Find the volume of this rectangular cuboid. - Cone
The 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. - Area 4gon
Calculate the area of 4-gon, two, and the two sides are equal and parallel with lengths 11, 5, 11, and 5. Inner angles are 45°, 135°,45°, 135°. - Radius
Determine the circle's radius if its perimeter and area are the same numbers. - Right isosceles
Calculate the area of the isosceles right triangle whose perimeter is 26 cm.
- Right triangle
Right triangle ABC with side a = 19 and the area S = 95. Calculate the length of the remaining sides. - Cubes
Surfaces of cubes, one of which has an edge of 48 cm shorter than the other, differ by 36288 dm². Determine the length of the edges of these cubes. - Rail turn
The curve radius on the railway line is 532 m. The length of the rail track on it is 818 m. How many degrees is the angle ASB if A and B are boundary points and S is the center of the arc curve? - Map
Forest has an area of 36 ha. How much area is occupied by forest on the map at scale 1:500? - 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.
- Cable
The cable consists of 8 strands. Each strand consists of 12 wires with a diameter of d = 0.5 mm. Calculate the cross-section of the cable. - Square
Calculate the area of the square with diagonal 64 cm. - Observatory
The observatory dome has the shape of a hemisphere with a diameter d = 14 m. Calculate the surface. - Rotating cone II
Calculate the area of the surface of a rotating cone with base radius r=15 cm and height h=13 cm. - Rectangles
How many rectangles with area 3152 cm² whose sides are natural numbers?
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Area - math word problems. Maths practice for 12-year-olds.