Searching for "angle"

Q:

Length of three line segments isgiven. Is construction of a triangle possible with the segments in the given cases?

A) 8 cm, 7 cm, 18 cm B) 8 cm, 15 cm, 17 cm
C) 10 cm, 6 cm, 4 cm D) 8 cm, 10 cm, 20 cm
 
Answer & Explanation Answer: B) 8 cm, 15 cm, 17 cm

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Q:

From an external point two tangents to a circle are drawn. The chord passing through the points of contact subtends an angle72° at the centre. The angle between the tangents is?

A) 36° B) 72°
C) 108° D) 144°
 
Answer & Explanation Answer: C) 108°

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Q:

Area of circle is equal to the area of a rectangle having perimeter of 50 cms. and length more than the breadth by 3 cms. What is the diameter of the circle?

A) 7 cms B) 21 cms
C) 28 cms D) 14 cms
 
Answer & Explanation Answer: D) 14 cms

Explanation:

Let the breadth of rectangle be x cm => Length of rectangle = (x+3) cm Now, perimeter =2(x+x+3) = 50 => 2x + 3 = 25 => x = 11 Thus, breadth = 11 cm and length = 14 cm Area of circle = Area of rectangle =>pi * r* r = 14 * 11 =>r*r = 14 * 11 * 7/22 =>r = 7 cm Diameter = 2 * 7 = 14 cm

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Filed Under: Area

Q:

How many triangles are there in the question figure?

A) 6 B) 10
C) 12 D)
 
Answer & Explanation Answer: D)

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Filed Under: Image Analysis

Q:

PQR is right angled at Q. If cosecP = 17/15, then what is the value of sinR ?

A) 15/17 B) 11/17
C) 8/17 D) 13/17
 
Answer & Explanation Answer: C) 8/17

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Q:

The side of an equilateral triangle is 8 cm. Find its area (in cm2).

A) 25√3 B) 16√2
C) 25√2 D) 16√3
 
Answer & Explanation Answer: D) 16√3

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Q:

If the line DE is drawn parallel to the base BC of a triangle ABC by intersecting the other two sides, then which of the following is the CORRECT equation for this case.

A) AB/DB=AC/EC B) AD/AB=DB/EC
C) AD/DB=EC/AE D) AD/DB=AE/EC
 
Answer & Explanation Answer: D) AD/DB=AE/EC

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Q:

The smallest angle of a triangle is 40° less than the largest angle. If the largest angle is 80°, then find the third angle of the triangle

A) 40° B) 90°
C) 80° D) 60°
 
Answer & Explanation Answer: D) 60°

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