Area problems
- 1. The length of the diagonal of a square is 10 cm. What is area of this square?
Options- A. 50 sq cm
- B. 100 sq cm
- C. 200 sq cm
- D. 25 sq cm Discuss
Correct Answer: 50 sq cm
- 2. What is the length of the side of an equilateral triangle, if its area is 36?3 sq cm?
Options- A. 6 cm
- B. 24 cm
- C. 12 cm
- D. 18 cm Discuss
Correct Answer: 12 cm
- 3. What is the area (in sq cm) of a rectangle if its diagonal is 51 cm and one of its sides is 24 cm?
Options- A. 540
- B. 810
- C. 1080
- D. 360 Discuss
Correct Answer: 1080
- 4. What is the area (in sq cm) of a rectangle of perimeter 90 cm and breadth 20 cm?
Options- A. 500
- B. 400
- C. 250
- D. 450 Discuss
Correct Answer: 500
- 5. Area of the circle inscribed in a square of diagonal 6√2 cm (in sq cm) is
Options- A. 9 π
- B. 6 π
- C. 3 π
- D. 9√2 π Discuss
Correct Answer: 9 π
- 6. What is the area (in square units) of the figure enclosed by the graphs of the lines x = -4, x = 2, y = -2 and y = 3?
Options- A. 12
- B. 24
- C. 15
- D. 60 Discuss
Correct Answer: 15
- 7. X and Y are the mid points of sides AB and AC of a triangle ABC. If BC+XY=12 units, then BC-XY is
Options- A. 8 units
- B. 4 units
- C. 6 units
- D. 2 units Discuss
Correct Answer: 4 units
- 8. The point of intersection of all the three medians of a triangle is called its
Options- A. orthocentre
- B. incentre
- C. centroid
- D. circumcentre Discuss
Correct Answer: centroid
- 9. In a triangle, the distance of the centroid from the three vertices is 4cm, 6cm and 8cm respectively. Then the length of the smallest median is:
Options- A. 8
- B. 7
- C. 6
- D. 5 Discuss
Correct Answer: 6
- 10. The length of the two parallel sides of a trapezium are 16 m and 20 m respectively. If its height is 10 m, its area in square metres is
Options- A. 360
- B. 260
- C. 240
- D. 180 Discuss
Correct Answer: 180
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