Problem Solving MCQ Set 11

Question: What is the circum radius of a triangle whose sides are 7, 24 and 25 respectively?

1. 18
2. 12.5
3. 12
4. 14

Question: A regular hexagon is inscribed in a circle of radius r cms. What is the perimeter of the regular hexagon?

1. 3r
2. 6r
3. r
4. 9r

Question: A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the surface area after such cutting?

1. 4%
2. 300%
3. 75%
4. 400%

Question: If the diagonal and the area of a rectangle are 25 m and 168 m2, what is the length of the rectangle?

1. 17 m
2. 31 m
3. 12 m
4. 24 m

Question: The surface area of the three coterminous faces of a cuboid are 6, 15, 10 sq.cm respectively. Find the volume of the cuboid.

1. 30
2. 20
3. 40
4. 35

Question: If each interior angle of a regular polygon is 150 degrees, then it is

1. Octagon
2. Decagon
3. Dodecagon
4. Tetrahedron