Grade 8 Geometry worksheet

What is on the worksheet

1. A trapezoid has parallel sides 22 cm and 28 cm and height 11 cm. Find its area in cm².

2. Two interior angles of a triangle are 63° and 89°. Find the third angle in degrees.

3. A shape has area 54 cm². All lengths are multiplied by 2. Find the new area in cm².

4. A trapezoid has parallel sides 13 cm and 8 cm and height 16 cm. Find its area in cm².

5. A triangle has base 32 cm and perpendicular height 54 cm. Find its area in cm².

6. A triangle has base 47 cm and perpendicular height 54 cm. Find its area in cm².

7. Two non-overlapping rectangular boxes measure 11×8×7 cm and 7×6×6 cm. Find their total volume in cm³.

8. A shape has area 22 cm². All lengths are multiplied by 3. Find the new area in cm².

9. Two interior angles of a triangle are 85° and 84°. Find the third angle in degrees.

10. A right triangle has legs 63 cm and 216 cm. Find the hypotenuse in cm.

11. A cylinder has radius 10 cm and height 39 cm. Its volume is kπ cm³. Find k.

12. A cylinder has radius 16 cm and height 34 cm. Its volume is kπ cm³. Find k.

13. A circle has radius 19 cm. Its circumference is kπ cm. Find k.

14. Find the volume of a cuboid measuring 12 cm × 7 cm × 7 cm, in cm³.

15. A trapezoid has parallel sides 29 cm and 18 cm and height 12 cm. Find its area in cm².

16. Two non-overlapping rectangular boxes measure 12×3×3 cm and 4×7×5 cm. Find their total volume in cm³.

17. A cylinder has radius 7 cm and height 2 cm. Its volume is kπ cm³. Find k.

18. A cone has radius 7 cm and height 42 cm. Use π = 3.14. Find its volume in cm³.

19. A triangle has base 25 cm and perpendicular height 4 cm. Find its area in cm².

20. A shape has area 39 cm². All lengths are multiplied by 6. Find the new area in cm².