# Area + area of the shape - math problems

#### Number of problems found: 880

• Observatory Observatory dome has the shape of a hemisphere with a diameter d = 20 m. Calculate the surface.
• Heron backlaw Calculate missing side in a triangle with sides 25 and 13 and area 152.
• Equilateral triangle Calculate the side of an equilateral triangle if its area is 892 mm2.
• Right triangle Right triangle legs has lengths 630 mm and 411 dm. Calculate the area of this triangle.
• Diamond Determine the side of diamond if its content is S = 353 cm2 and one diagonal u2 = 45 cm.
• Triangle Calculate heights of the triangle ABC if sides of the triangle are a=82, b=44, and c=53.
• Circle How big is an area of a circle if its circumference is 51.2 cm?
• Aquarium II Calculate how much glass we need to build an aquarium with a rectangular shape with base 70 cm × 70 cm and a height of 70 cm, if the waste is 2%. Aquarium haven't top glass.
• Black building Keith built building with a rectangular shape 6.5 m × 3.9 m. Calculate how much percent exceeded the limit 25 m2 for small building. Building not built in accordance with the law is called "black building". Calculate the angle that the walls were clenchi
• Isosceles right triangle Calculate the area of an isosceles right triangle whose perimeter is 252 cm.
• Concrete pipe Concrete pipe is cylindrical with an inner diameter 110 cm and outer 120 cm. Calculate the surface of the concrete pipe, if it is 9 m long.
• Circle and angle What is the length of the arc of a circle with radius r = 207 mm with cental angle 5.33 rad?
• Widescreen monitor Computer businesses hit by a wave of widescreen monitors and televisions. Calculate the area of ​​the LCD monitor with a diagonal size 20 inches at ratio 4:3 and then 16:9 aspect ratio. Is buying widescreen monitors with the same diagonal more advantageou
• Roller Cylinder shell has the same content as one of its bases. Cylinder height is 15 dm. What is the radius of the base of the cylinder?
• Similarity n-gon 9-gones ABCDEFGHI and A'B'C'D'E'F'G'H'I' are similar. The area of 9-gon ABCDEFGHI is S1=190 dm2 and the diagonal length GD is 32 dm. Calculate area of the 9-gon A'B'C'D'E'F'G'H'I' if G'D' = 13 dm.
• Glass mosaic How many dm2 glass is nessesary to produc 97 slides of a regular 6-gon, whose side has length 21 cm? Assume that cutting glass waste is 10%.
• Rectangle - sides ratio Calculate the area of a rectangle whose sides are in ratio 3:13 and perimeter is 673.
• Trapezium zoom How many times increase area of trapezoid if all sides and altitude increase 5 times?
• Rectangles Calculate how many squares/rectangles of size 4×3 cm can be cut from a sheet of paper of 36 cm × 32 cm?
• Rectangle A2dim Calculate the side of the rectangle, if you know that its area is of 2590 m2 and one side is 74 m.

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Area - math word problems. Examples of area of plane shapes.