Area of shape - 8th grade (13y) - math problems
Number of examples found: 382
- Rhombus HP
Calculate area of the rhombus with height 24 dm and perimeter 12 dm.
PQRS is a rhombus. Given that PQ=3 cm & height of rhombus is given 2 cm. Calculate its area.
Fencing square playground cost € 464; 1 meter cost € 19. What is the area of the playground?
- Circle - simple
Calculate the area of a circle in dm2, if its circumference is 31.4 cm.
Calculate area of the square with diagonal 64 cm.
The area of trapezium is 35cm2 find its altitude if the bases are 6cm and 8cm.
- Squaring the Circle
Calculating side of the square with the same area as the circle of radius 18.
The diameter of a circular plot is 14 dm. Find the circumference and area.
- Right triangle
Right triangle ABC with side a = 19 and the area S = 95. Calculate the length of the remaining sides.
- Rhombus 4
Circumference of the rhombus is 44 cm, its height is 89 mm long. Calculate its content area.
Calculate the area of two circles annulus k1 (S, 3 cm) and k2 (S, 5 cm).
- CD disc
A compact disc has a diameter of 11.8 cm. What is the surface area of the disc in square centimeters?
- Trapezium 2
Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
Calculate the content of the shaded part of square with side 28 cm.
- Circle inscribed
Calculate the perimeter and area of a circle inscribed in a triangle measuring 3 , 4 and 5 cm.
- Mysterious area
The trapezoid ABCD is given. Calculate its area if the area of the DBC triangle is 27 cm2.
Calculate heights of the triangle ABC if sides of the triangle are a=75, b=84 and c=33.
Rhombus has side 17 cm and and one of diagonal 22 cm long. Calculate its area.
- Areaf of ST
It is given square DBLK with side |BL|=13. Calculate area of triangle DKU if vertex U lie on line LB.
- Pipe cross section
The pipe has an outside diameter 1100 mm and the pipe wall is 100 mm thick. Calculate the cross section of this pipe.