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Calculate the area of triangles using a formula · Grade 6 · E2.2

Name: ______________________

Date: ______________________

1
A triangle has a base of 6 cm and a height of 6 cm. What is its area, in square centimetres?
Warm-up
Answer:
2
A triangle has a base of 4 cm and a height of 9 cm. What is its area, in square centimetres?
Warm-up
Answer:
3
A triangle has a base of 4 cm and a height of 8 cm. What is its area, in square centimetres?
Warm-up
Answer:
4
A triangle has a base of 13 cm and a height of 12 cm. What is its area, in square centimetres?
On level
Answer:
5
A triangle has a base of 16 cm and a height of 10 cm. What is its area, in square centimetres?
On level
Answer:
6
A triangle has a base of 7 cm and a height of 12 cm. What is its area, in square centimetres?
On level
Answer:
7
A triangle has a base of 18 cm and a height of 14 cm. What is its area, in square centimetres?
Challenge
Answer:
8
A triangle has a base of 11 cm and a height of 16 cm. What is its area, in square centimetres?
Challenge
Answer:
9
A triangle has a base of 10 cm and a height of 11 cm. What is its area, in square centimetres?
Challenge
Answer:

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Worksheet code: eyJzIjoic3BhdGlhbC1hcmVhLXRyaWFuZ2xlIiwiZCI6WzE1OTk1NzU4NzgsMTcxNjkzOTE4NCwxMjM4MDQ0MTI5LDE5NTUyMzY1NiwxMjMyNDM1NDc3LDExOTU5Njk1NDYsMTIxNjgyMDg3NiwxNzcwMDIxODM1LDE2OTQ0Njc0NjddLCJ2IjoxfQ.a7cf56adbccc

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Answer key · Calculate the area of triangles using a formula

1.
18 — Area = base × height ÷ 2 = 6 × 6 ÷ 2 = 18.
2.
18 — Area = base × height ÷ 2 = 4 × 9 ÷ 2 = 18.
3.
16 — Area = base × height ÷ 2 = 4 × 8 ÷ 2 = 16.
4.
78 — Area = base × height ÷ 2 = 13 × 12 ÷ 2 = 78.
5.
80 — Area = base × height ÷ 2 = 16 × 10 ÷ 2 = 80.
6.
42 — Area = base × height ÷ 2 = 7 × 12 ÷ 2 = 42.
7.
126 — Area = base × height ÷ 2 = 18 × 14 ÷ 2 = 126.
8.
88 — Area = base × height ÷ 2 = 11 × 16 ÷ 2 = 88.
9.
55 — Area = base × height ÷ 2 = 10 × 11 ÷ 2 = 55.