Circle - 8th grade (13y) - math problems
Number of examples found: 273
- Two circles
Two circles with a radius 4 cm and 3 cm have a center distance 0.5cm. How many common points have these circles?
The diameter of a circular plot is 14 dm. Find the circumference and area.
Calculate the content of the shaded part of square with side 28 cm.
- Find radius
Find radius of circle using pythagorean theorem where a=9, b=r, c= 6+r
Calculate the length of the Thales' circle described to right triangle with hypotenuse 18.4 cm.
What is the wheel diameter if on the 0.38 km track turns 128 times?
Diameter of motocycle wheel is 52 cm. How many times rotates wheel on roand long 2 km?
Determine the radius of the circle, if its perimeter and area is the same number.
- Ruler and compass
Use a ruler and compass to construct a triangle ABC with AB 5cm BAC 60° and ACB 45°.
- Rhombus construction
Construct ABCD rhombus if its diagonal AC=9 cm and side AB = 6 cm. Inscribe a circle in it touching all sides...
What area of a circle occupied the flowers planted in the arc of a circle with radius 4 m with central angle 45°?
- Cylinder - basics
Cylinder with base radius r = 45 dm and height h=22 dm. Calculate:
Two concentric circles form an annulus of width 10 cm. The radius of the smaller circle is 20 cm. Calculate the content area of annulus.
- 10 pieces
How to divide the circle into 10 parts (geometrically)?
The bridge arc has a span 34 m and height 3 m. Calculate the radius of the circle arc of this bridge.
- Quadrant II
Calculate the radius of the quadrant, which area is equal to area of circle with radius r = 15 cm.
Calculate perimeter of the circle described by a triangle with sides 478, 255, 352.
- Circle and angle
What is the length of the arc of a circle with radius r = 207 mm with cental angle 5.33 rad?
- The chord
Calculate a chord length which the distance from the center of the circle (S, 6 cm) equals 3 cm.
Roller has a diameter of 0.96 m and a width 169 cm. How many m2 of road level when he turns 42-times?