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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
8.6 Finding the Area/Perimeter of Triangles

If a triangle has a base b units and height of h units, then
The area A is 1/2 base x height.
The perimeter is the sum of lengths of all the three sides side1 + side2 + side3.

A = 1/2 (b x h)
P = a + b + c

Example:
A triangle has a base of 3 ft and height of 5 ft. Find the area of the triangle.
Area of triangle = (b x h) / 2
Substituting the values b = 3 and height = 5
(3 x 5)/2 = 15/2
Answer: 7.5 square feet
Note: The units of area are square feet or ft2.


Directions: Find the area for the following questions. Also write at least 5 examples of your own.
Q 1: What is the area of a triangle with base 4cm and height 2cm
4 square cm
2 square cm
6 square cm

Q 2: A triangle has a base of 3 cm., it's height is 3.7 cm. and the two sides are 4 cm. Find the perimeter.
11 cm.
10 cm.
12 cm.

Q 3: Find the PERIMETER of an EQUILATERAL TRIANGLE, Side = 8 inches
18
32
24

Q 4: A triangle has a base of 3 cm., it's height is 3.7 cm. and the two sides are 4 cm. Find the area.
5.58 sq. cm.
16.55 sq. cm.
11.5 sq. cm.
5.55 sq. cm.

Q 5: The formula for area of a triangle with base b and height h
A = b x h
A = 2(b + h)
A = (b x h) / 2

Q 6: Find the PERIMETER of an EQUILATERAL TRIANGLE, Side = 9 inches
25
27
24

Q 7: Find the AREA of a TRIANGLE, Base = 9 inches, Height = 6 inches
25
27
28

Q 8: A triangle has a base of 6 ft., a height of 5 ft. and sides of 6 ft. Find the area of the triangle.
30
28
25

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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