Class 10th English Medium Math MCQ Quiz

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Questions and Answers

What is the value of the square root of 144?

10
12 (correct)
13
11

In a triangle, if two angles are 45° and 60°, what is the measure of the third angle?

70°
75° (correct)
90°
80°

What is the value of 'x' in the equation 3x - 7 = 8?

6
7
5 (correct)
4

What is the value of x if 3x - 7 = 11?

8 (C) Signup and view all the answers

What is the square root of 144?

12 (B) Signup and view all the answers

If a rectangle has a length of 8 cm and a width of 5 cm, what is its perimeter?

32 cm (C) Signup and view all the answers

Flashcards

What is the square root of 144?

The square root of 144 is 12, meaning 12 multiplied by itself equals 144.

Angles in a triangle

The sum of the angles in any triangle is always 180°. If two angles are 45° and 60°, the third angle is 180° - 45° - 60° = 75°.

Solving for 'x' in an equation

To solve for 'x' in the equation 3x - 7 = 8, you need to isolate 'x'. First, add 7 to both sides: 3x = 15. Then, divide both sides by 3: x = 5.

Solving for 'x' (another example)

To solve for 'x' in the equation 3x - 7 = 11, follow the steps to isolate 'x'. First, add 7 to both sides: 3x = 18. Then, divide both sides by 3: x = 6.

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Perimeter of a rectangle

The perimeter of a rectangle is the total length of all its sides. For a rectangle with length 8 cm and width 5 cm, the perimeter is 2 * (length + width) = 2 * (8 cm + 5 cm) = 2 * 13 cm = 26 cm.

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Study Notes

Basic Mathematical Concepts

The square root of 144 is 12, as (12 \times 12 = 144).

Triangle Angle Calculation

In a triangle, the sum of all angles is always 180°.
If two angles are 45° and 60°, the third angle can be calculated as (180° - (45° + 60°) = 75°).

Solving Linear Equations

For the equation (3x - 7 = 8):
- Add 7 to both sides: (3x = 15).
- Divide by 3: (x = 5).
For the equation (3x - 7 = 11):
- Add 7 to both sides: (3x = 18).
- Divide by 3: (x = 6).

Rectangle Perimeter Calculation

The perimeter (P) of a rectangle is calculated using the formula (P = 2 \times (length + width)).
For a rectangle with a length of 8 cm and a width of 5 cm, the perimeter is (P = 2 \times (8 cm + 5 cm) = 26 cm).