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Lesson details

Key learning points

  1. In this lesson, we will recap how to use Pythagorean theorem to find the length of missing sides in triangles leaving the answers is surd form.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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6 Questions

Q1.
√9 is a surd
Correct answer: False
Option 3
Option 4
Option 5
True
Q2.
Which of the following is a surd
A
B
Correct answer: C
D
Q3.
Which on the following is NOT a surd
Correct answer: A
B
C
D
Q4.
Which of the following is a surd?
A
B
Correct answer: C
D
Q5.
Evaluate √49
24.5
Correct answer: 7
98
Q6.
Estimate √57
28.2
28.5
7.2
Correct answer: 7.5

7 Questions

Q1.
Which of the following is a surd
A
Correct answer: B
C
D
Q2.
Which of the following is NOT a surd
Option 1
B
C
Correct answer: D
Q3.
Evaluate √144
1.44
Correct answer: 12
72
Q4.
A right- angled triangle has sides a, b and c as show in the diagram. What is the correct formula to find the length a.
A
B
C
Correct answer: D
Q5.
A right- angled triangle is shown in the diagram below. Find the length of the hypotenuse.
An image in a quiz
Correct answer: √116
116
14
28
Q6.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
An image in a quiz
√135
Correct answer: √153
√33
153
Q7.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
An image in a quiz
√146
Correct answer: √96
36
96

Lesson appears in

UnitMaths / Surds and trigonometry