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Area
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Question
?ABC is similar to ?PQR. If ratio of perimeter of ?ABC : perimeter of ?PQR is 5:9 and if PQ = 45 cm, then the length of AB (in cm) is?
Options
A. 15
B. 20
C. 25
D. 16
Correct Answer
25
Area problems
Search Results
1. Area of 4 walls of a cuboid 400 sq cm, its length is 15 cm and height is 8 cm. What is its breadth (in cm)?
Options
A. 12
B. 20
C. 24
D. 10
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Correct Answer: 10
2. The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by
Options
A. 20%
B. 25%
C. 30%
D. 40%
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Correct Answer: 20%
3. The length of the base of an isosceles triangle is 2x2y+4z, and its perimeter is 4x2y+6z. Then the length of each of the equal sides is
Options
A. x+y
B. x+y+z
C. 2(x+y)
D. x+z
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Correct Answer: x+z
4. The length of the diagonal and the breadth of a rectangle are 17 cm and 8 cm respectively. Find its perimeter (in cm).
Options
A. 92
B. 46
C. 42
D. 84
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Correct Answer: 46
5. The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is
Options
A. 17 cm
B. 11 cm
C. 15 cm
D. 13 cm
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Correct Answer: 13 cm
6. D and E are points on side AB and AC of ?ABC. DE is parallel to BC. If AD:DB = 2:3, what is the ratio of area of ?ADE and area of quadrilateral BDEC?
Options
A. 4 : 21
B. 4 : 25
C. 4 : 29
D. 4 : 9
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Correct Answer: 4 : 21
7. If the parallel sides of a trapezium are 8 cm and 4 cm, M and N are the mid points of the diagonals of the trapezium, then length of MN is
Options
A. 12 cm
B. 6 cm
C. 1 cm
D. 2 cm
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Correct Answer: 2 cm
8. An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is
Options
A. 2?3 cm
B. 3?2 cm
C. 4?3 cm
D. ?3 cm
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Correct Answer: 2?3 cm
9. ABC is an isosceles right angled triangle having ?C = 90°. If D is any point on AB, then AD2+ BD2 is equal to
Options
A. CD2
B. 2CD2
C. 3CD2
D. 4CD2
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Correct Answer: 2CD2
10. ABCDEF is a regular hexagon of side 12 cm. What is the area (in cm2) of the triangle ECD?
Options
A. 18?3
B. 24?3
C. 36?3
D. 42?3
Show Answer
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Correct Answer: 36?3
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