Review: geometry
Answers are for parents and teachers.
1
Find the perimeter of a triangle with sides 9, 12 and 15 cm.
36
2
Find the area in cm² of a right triangle with legs 9 and 12 cm.
54
3
A parallelogram has base 15 cm and height 8 cm. What is its area in cm²?
120
4
What is the area of a disc with radius 10 cm (π = 3.14), in cm²?
314
5
Find the circumference of a circle with diameter 20 cm (π = 3.14).
62.8 cm