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

#### Number of examples found: 137

• Square Calculate area of the square with diagonal 64 cm.
• Polygon 42 Which polygon has 42 more diagonals than sides?
• Rhombus diagonal Area of rhombus is 224. One diagonal measures 33, find length of other diagonal.
• Diameter If the endpoints of a diameter of a circle are A(10, -1) and B (3, 10), what is the radius of the circle?
• Diamond Calculate the length of the two diagonals of the diamond if: a = 13 cm v = 12 cm
• Diamond Side length of diamond is 35 cm and the length of the diagonal is 56 cm. Calculate the height and length of the second diagonal.
• Circumscription Calculate radius of the Circumscribed circle in the rectangle with sides 20 and 19. It can be rectangle inscribed by circle?
• 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?
• Trapezoid Are diagonals in a rectangular trapezoid perpendicular and bisect the angles?
• Wall and body diagonals The block/cuboid has dimensions a = 4cm, b = 3cm and c = 12cm. Calculates the length of the wall and body diagonals.
• Cuboid - volume, diagonals The length of the one base edge of cuboid a is 3 cm. Body diagonal is ut=13 cm and diagonal of cuboid's baseis u1=5 cm. What is the volume of the cuboid?
• Satin Sanusha buys a piece of satin 2.4 m wide. The diagonal length of the fabric is 4m. What is the length of the piece of satin?
• Body diagonal Find the cube surface if its body diagonal has a size of 6 cm.
• Construct Construct a rhombus ABCD, if the size of the diagonal AC is 6 cm and diagonal BD 8 cm long.
• Diagonals of a rhombus One of the diagonals of a rhombus is twice as the other. If the sum of the lengths of the diagonals is 24, find the area of the rhombus.
• Diagonals of diamond Find the area and circumference of the diamond ABCD with 15m and 11m diagonals.
• Rhombus IV Calculate the length of the diagonals of the rhombus, whose lengths are in the ratio 1: 2 and a rhombus side is 35 cm.
• Tree trunk What is the smallest diameter of a tree trunk that we can cut a square-section square with a side length of 20 cm?
• Rectangle The rectangle is 18 cm long and 10 cm wide. Determine the diameter of the circle circumscribed to rectangle.
• Tiles How much you will pay CZK for laying tiles in a square room with a diagonal of 8 m if 1 m2 cost CZK 420?

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