Area problems
- 1. What is the area (in sq cm) of an equilateral triangle of side 6 cm?
Options- A. 36?3
- B. 9
- C. 36
- D. 9?3 Also asked in: Bank Exams
Correct Answer: 9?3
- 2. In a triangle the length of the side opposite the right angle is 9?3 cm, what is the length of the side opposite to the angle which measures 30 degree?
Options- A. 9 cm
- B. 3?3 cm
- C. 6 cm
- D. (9?3)/2 cm Also asked in: Bank Exams
Correct Answer: (9?3)/2 cm
- 3. The area of an equilateral triangle is 9?3 sq cm, find height of the triangle?
Options- A. 6 cm
- B. 6?3 cm
- C. 3?3 cm
- D. 9 cm Also asked in: Bank Exams
Correct Answer: 3?3 cm
- 4. What is the area (in sq cm) of a circle whose circumference is 26.4 cm?
Options- A. 55.44
- B. 44.55
- C. 33.44
- D. 44.33 Also asked in: Bank Exams
Correct Answer: 55.44
- 5. What is the area (in sq cm) of a circle whose circumference is 22 cm?
Options- A. 77
- B. 38.5
- C. 44
- D. 88 Also asked in: Bank Exams
Correct Answer: 38.5
- 6. The area of a triangle with vertices A (0, 8) , O (0,0) and B (5, 0) is:
Options- A. 8 sq. units
- B. 13 sq. units
- C. 20 sq. units
- D. 40 sq. units Also asked in: Bank Exams
Correct Answer: 20 sq. units
- 7. Three medians AD, BE and CF of ?ABC intersect at G; Area of ?ABC is 36 sq cm. Then the area of ?CGE is
Options- A. 12 sq cm
- B. 6 sq cm
- C. 9 sq cm
- D. 18 sq cm Also asked in: Bank Exams
Correct Answer: 6 sq cm
- 8. Two circles touch each other at point X. A common tangent touch them at two distinct points Y and Z. If another tangent passing through X cut YZ at A and XA= 16 cm, then what is the value (in cm) of YZ?
Options- A. 18
- B. 24
- C. 16
- D. 32 Also asked in: Bank Exams
Correct Answer: 32
- 9. The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ 26.50 per metre is Rs. 5300, what is the length of the plot in metres?
Options- A. 40
- B. 20
- C. 30
- D. none of these Also asked in: Bank Exams, Bank PO
Correct Answer: none of these
Explanation:
Let breadth = x metres.
Then, length = (x + 20) metres.
Perimeter =5300/23.50
2[(x + 20) + x] = 200
2x + 20 = 100
2x = 80
x = 40.
Hence, length = x + 20 = 60 m.
- 10. A sector of 120, cut out from a circle, has an area of 667cm2 . Find the radius of the circle ?
Options- A. 1
- B. 2
- C. 3
- D. 4 Also asked in: AIEEE, Bank Exams, CAT, Bank Clerk, Bank PO
Correct Answer: 3
Explanation:
Let the radius of the circle be r cm. Then,
r=3.
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