# Mensuration Important 20 question

## Question 1: The sum of the interior angles of a triangle is:

A) 90 degrees

B) 180 degrees

C) 270 degrees

D) 360 degrees

**Answer: D) 360 degrees**

**Question 2: If the radius of a circle is 5 centimeters, what is its circumference?**

A) 10 centimeters

B) 15 centimeters

C) 25 centimeters

D) 31.42 centimeters

**Answer: D) 31.42 centimeters**

**Question 3: The area of a rectangle with a length of 8 meters and a width of 5 meters is:**

A) 8 square meters

B) 13 square meters

C) 26 square meters

D) 40 square meters

**Answer: D) 40 square meters**

**Question 4: What is the volume of a cube with an edge length of 3 inches?**

A) 6 cubic inches

B) 9 cubic inches

C) 18 cubic inches

D) 27 cubic inches

**Answer: B) 9 cubic inches**

**Question 5: In a right triangle, if one leg has a length of 4 units and the other leg has a length of 3 units, what is the length of the hypotenuse?**

A) 5 units

B) 6 units

C) 7 units

D) 8 units

**Answer: A) 5 units**

**Question 6: The perimeter of a square garden with each side measuring 10 feet is:**

A) 20 feet

B) 30 feet

C) 40 feet

D) 50 feet

**Answer: C) 40 feet**

**Question 7: What is the area of a circle with a radius of 6 inches?**

A) 12 square inches

B) 18 square inches

C) 24 square inches

D) 36 square inches

**Answer: D) 36 square inches**

**Question 8: If two angles of a triangle measure 45 degrees and 60 degrees, what is the measure of the third angle?**

A) 15 degrees

B) 30 degrees

C) 45 degrees

D) 60 degrees

**Answer: A) 15 degrees**

**Question 9: The total surface area of a cube with a side length of 4 centimeters is:**

A) 8 square centimeters

B) 16 square centimeters

C) 32 square centimeters

D) 64 square centimeters

**Answer: C) 32 square centimeters**

**Question 10: What is the perimeter of a rectangle with a length of 12 meters and a width of 8 meters?**

A) 16 meters

B) 32 meters

C) 40 meters

D) 48 meters

**Answer: D) 48 meters**

**Question 11: In construction, which geometric shape is often used as the base of a pyramid or a cone?**

A) Triangle

B) Square

C) Rectangle

D) Circle

**Answer: B) Square**

**Question 12: When measuring the area of a rectangular field, what are the units of the result?**

A) Cubic units

B) Square units

C) Linear units

D) None of the above

**Answer: B) Square units**

**Question 13: What is the term for a straight line that touches a curve at a single point without crossing it?**

A) Chord

B) Diameter

C) Tangent

D) Radius

**Answer: C) Tangent**

**Question 14: In a right triangle, which side is opposite to the right angle?**

A) Hypotenuse

B) Base

C) Altitude

D) None of the above

**Answer: A) Hypotenuse**

**Question 15: What is the measurement unit for the interior angles of a polygon?**

A) Degrees

B) Radians

C) Inches

D) Feet

**Answer: A) Degrees**

**Question 16: Which geometric shape best represents the cross-section of a cylinder?**

A) Circle

B) Rectangle

C) Triangle

D) Hexagon

**Answer: A) Circle**

**Question 17: In navigation, what do we call the angle measured clockwise from the North direction?**

A) Latitude

B) Longitude

C) Azimuth

D) Altitude

**Answer: C) Azimuth**

**Question 18: What is the formula for calculating the volume of a sphere?**

A) V = Ï€rÂ²

B) V = 2Ï€r

C) V = (4/3)Ï€rÂ³

D) V = 1/2 * Ï€d

**Answer: C) V = (4/3)Ï€rÂ³**

**Question 19: In a parallelogram, opposite sides are:**

A) Congruent and parallel

B) Congruent and perpendicular

C) Congruent and intersecting

D) None of the above

**Answer: A) Congruent and parallel**

**Question 20: What is the perimeter of a square garden with each side measuring 12 feet?**

A) 12 feet

B) 24 feet

C) 36 feet

D) 48 feet

**Answer: C) 36 feet**