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Geometry and Mensuration: Level 2 Test 10
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Question 1 |
In the given figure, AB is diameter of the circle and points C and D are on the circumference such that CAD= 30o and CBA= 70o. What is the measure of ACD?
40o | |
50o | |
30o | |
90o |
Question 1 Explanation:
Question 2 |
The length of a rectangular field is double its width. Inside the field, there is a square-shaped pond 8 m long. If the area of the pond is 1/8 of the area of the field, what is the length of the field?
32 m | |
16 m | |
64 m | |
20 m |
Question 2 Explanation:
The area of the pond = 8X8 = 64 sq. m.
The area of the field = 8 X 64 = 512 sq. m.
The length = $\left\{ 2\times \sqrt{\left( \frac{512}{2} \right)} \right\}=32$
The correct option is (a).
The area of the field = 8 X 64 = 512 sq. m.
The length = $\left\{ 2\times \sqrt{\left( \frac{512}{2} \right)} \right\}=32$
The correct option is (a).
Question 3 |
Two small circular parks of diameters 16 m, 12 m are to be replaced by a bigger circular park. What would be the radius of this new park, if the new park occupies the same space as the two small parks?
10m | |
20m | |
15m | |
25m |
Question 3 Explanation:
The area of the smaller parks = Î 82+ Î 62 = 22/7(100)
Î r2 =100
r = 10
Î r2 =100
r = 10
Question 4 |
A garden is 24 m long and 14 m wide. There is a path 1 m wide outside the garden along its sides. If the path is to be constructed with square marbles tiles 20 cm x 20 cm, find the number of tiles required to cover the path.
1800 | |
2000 | |
200 | |
2150 |
Question 4 Explanation:
The area of the path = (24+2x1)(14+2x1) -24x14 = 80 sq. m.
The total number of times = (80 x 10000)/400 = 2000
The correct option is (b)
The total number of times = (80 x 10000)/400 = 2000
The correct option is (b)
Question 5 |
A rectangular plate is of 6 m breadth and 12 m length. Two apertures of 2 m diameter each and one aperture of 1 m diameter have been made with the help of a gas cutter. What is the area of the remaining portion of the plate?
68.5 sq. m | |
62.5 sq. m | |
65 sq. m | |
None of these |
Question 5 Explanation:
The area of the plate = 12x6 = 72 sq. m.
The total area of the triangle = Î x 12x 2 + Î x 0.52
= (2+0.25)Î = 2.25Î Â = 7.07 m2
Remaining area = 72 -7.07Â = 64.9
Closest option is (c)
The total area of the triangle = Î x 12x 2 + Î x 0.52
= (2+0.25)Î = 2.25Î Â = 7.07 m2
Remaining area = 72 -7.07Â = 64.9
Closest option is (c)
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