# Area of shape + expression of a variable from the formula - math problems

#### Number of problems found: 250

• Shape Plane shape has a maximum area 677 mm2. Calculate its perimeter if perimeter is the smallest possible.
• Area of a circle The circumference of the circle is 150.72 centimeters. Calculate the area of the circle.
• Area to perimeter Calculate circle circumference if its area is 254.34cm2
• Square Calculate the area of the square shape of the isosceles triangle with the arms 50m and the base 60m. How many tiles are used to pave the square if the area of one tile is 25 dm2?
• Perimeter to area Calculate the area of a circle with a perimeter of 15 meters.
• The funnel The funnel has the shape of an equilateral cone. Calculate the content of the area wetted with water if you pour 3 liters of water into the funnel.
• Of the Of the formula S = the surface of the cuboid S=2. (ab+ac+bc) express unknown c. C =?
• Two gardens The flower garden has a square shape. The new garden has the shape of a rectangle, and one dimension is 8 m smaller, and the other is twice as large as in a square garden. What were the original garden dimensions and the new garden if both gardens' area i
• A rectangle A rectangle has an area of 36 cm2. What could the length and width of rectangle be?
• Diagonal to area Calculate the area of a rectangle in which the length of the diagonal is 10 cm.
• What is 10 What is the measure of the square side whose area is (4x2 + 28x+49) square units?
• Circle How big is an area of a circle if its circumference is 80.6 cm?
• Folding table The folding kitchen table has a rectangular shape with an area of 168dm2 (side and is 14 dm long). If necessary, it can be enlarged by sliding two semi-circular plates (at sides b). How much percent will the table area increase? The result round to one-hu
• Radius Determine the radius of the circle, if its perimeter and area is the same number.
• Equilateral triangle Calculate the area of an equilateral triangle with circumference 72cm.
• Isosceles right triangle Area of an isosceles right triangle is 18 dm2. Calculate the length of its base.
• Square to rectangle What is the ratio of the area of a square of side x to the area of a rectangle of a rectangle of width 2 x and length 3
• RT 11 Calculate the area of right tirangle if its perimeter is p = 45 m and one cathethus is 20 m long.
• Outside point The square ABCD and the point E lying outside the given square are given. What is the area of the square when the distance | AE | = 2, | DE | = 5 a | BE | = 4?
• Perimeter from area What is the perimeter of the square if its content is 64 cm2?

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Examples of area of plane shapes. Expression of a variable from the formula - math problems.