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- Question
Radius of cross section of a solid right circular cylindrical rod is 3.2 dm. The rod is melted and 44 equal solid cubes of side 8 cm are formed. The length of the rod is (Take ? = 22/7)
Options- A. 56 cm
- B. 7 cm
- C. 5.6 cm
- D. 0.7 cm
- Correct Answer
- 7 cm
- 1. In an isosceles triangle ?ABC, AB = AC and ?A = 80°. The bisector of ?B and ?C meet at D. The ?BDC is equal to
Options- A. 90°
- B. 100°
- C. 130°
- D. 80° Discuss
- 2. Points P , Q and R are on a circle such that ?PQR = 40° and ?QRP = 60° . Then the subtended angle by arc QR at the centre is
Options- A. 80°
- B. 120°
- C. 140°
- D. 160° Discuss
- 3. A right circular conical structure stands on a circular base of 21m diameter and is 14m in height. The total cost of colour washing for its curved surface at Rs. 6 per sq. m. is (Take ? = 22/7 )
Options- A. 4365
- B. 4465
- C. 3465
- D. 3365 Discuss
- 4. Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is
Options- A. isosceles
- B. equilateral
- C. scalene
- D. right-angled Discuss
- 5. Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is
Options- A. isosceles
- B. equilateral
- C. scalene
- D. right-angled Discuss
- 6. If the volumes of two right circular cones are in the ratio 1:4 and their diameters of bases in the ratio 4:5, then their heights will be in the ratio:
Options- A. 1: 5
- B. 4:25
- C. 16:25
- D. 25:64 Discuss
- 7. Which of the following is a true statement?
Options- A. Two similar triangles are always congruent.
- B. Two similar triangles have equal areas
- C. Two triangles are similar if their corresponding sides are proportional
- D. Two polygons are similar if their corresponding sides are proportional Discuss
- 8. In a triangle ABC, OB and OC are the bisectors of angles ? B and ?C respectively. ?BAC = 60°. Then the angle ?BOC will be
Options- A. 150°
- B. 120°
- C. 100°
- D. 90° Discuss
- 9. If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is
Options- A. 37°
- B. 41°
- C. 42°
- D. 49° Discuss
- 10. What is the slope of the line 2x + 3y = 12?
Options- A. 2/3
- B. 3/2
- C. -3/2
- D. -2/3 Discuss
Volume and Surface Area problems
Search Results
Correct Answer: 130°
Correct Answer: 160°
Correct Answer: 3465
Correct Answer: equilateral
Correct Answer: equilateral
Correct Answer: 25:64
Correct Answer: Two triangles are similar if their corresponding sides are proportional
Correct Answer: 120°
Correct Answer: 41°
Correct Answer: -2/3
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