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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 4 cm and a height of 5 cm. What is its area, in square centimetres?
Warm-up
Answer:
2
A triangle has a base of 2 cm and a height of 6 cm. What is its area, in square centimetres?
Warm-up
Answer:
3
A triangle has a base of 6 cm and a height of 7 cm. What is its area, in square centimetres?
Warm-up
Answer:
4
A triangle has a base of 8 cm and a height of 8 cm. What is its area, in square centimetres?
On level
Answer:
5
A triangle has a base of 7 cm and a height of 5 cm. What is its area, in square centimetres?
On level
Answer:
6
A triangle has a base of 8 cm and a height of 13 cm. What is its area, in square centimetres?
On level
Answer:
7
A triangle has a base of 20 cm and a height of 12 cm. What is its area, in square centimetres?
Challenge
Answer:
8
A triangle has a base of 23 cm and a height of 21 cm. What is its area, in square centimetres?
Challenge
Answer:
9
A triangle has a base of 28 cm and a height of 16 cm. What is its area, in square centimetres?
Challenge
Answer:

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Worksheet code: eyJzIjoic3BhdGlhbC1hcmVhLXRyaWFuZ2xlIiwiZCI6WzcyMDgwODA4NSw1NjM1OTE1NDYsNzgzODQ5NTQ3LDEyOTQ4OTg1NjMsMTQ0NzMxMDQ0MiwxMDE3NjE5MDIzLDk5NDY5Mjc4LDYxMjE0MDYwMiw3Njc1MjE1NjBdLCJ2IjoxfQ.131f9f6fdfe6

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Answer key · Calculate the area of triangles using a formula

1.
10 — Area = base × height ÷ 2 = 4 × 5 ÷ 2 = 10.
2.
6 — Area = base × height ÷ 2 = 2 × 6 ÷ 2 = 6.
3.
21 — Area = base × height ÷ 2 = 6 × 7 ÷ 2 = 21.
4.
32 — Area = base × height ÷ 2 = 8 × 8 ÷ 2 = 32.
5.
17.5 — Area = base × height ÷ 2 = 7 × 5 ÷ 2 = 17.5.
6.
52 — Area = base × height ÷ 2 = 8 × 13 ÷ 2 = 52.
7.
120 — Area = base × height ÷ 2 = 20 × 12 ÷ 2 = 120.
8.
241.5 — Area = base × height ÷ 2 = 23 × 21 ÷ 2 = 241.5.
9.
224 — Area = base × height ÷ 2 = 28 × 16 ÷ 2 = 224.