IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 811 - 817 of 1022
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Question number: 811
Question
The ratio of the radii of two hula-hoops is 2: 5. What is the ratio of their area?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 25: 4 | |
b. | 2: 5 | |
c. | 4: 25 | |
d. | 3: 2 | |
Question number: 812
Question
The radius of the given circle is 7 cm, then the area of the shaded portion is ________.
Image of a Circle Made by 7 Cm Radius
Choices
| Choice (4) | Response | |
|---|---|---|
a. |
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b. |
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c. |
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d. |
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Question number: 813
» Symmetry and Visualizing Solid Shapes
Question
The quadrilateral which has both line and rotational symmetry of order more than 1 is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Rhombus | |
b. | Square | |
c. | Parallelogram | |
d. | Rectangle | |
Question number: 814
Question
The height of an isosceles triangle is cm long and its equivalent sides are 10 cm long. Its area is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. |
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b. |
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c. |
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d. |
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Question number: 815
Question
If and , then the value of is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 1534 | |
b. | 1781 | |
c. | 1625 | |
d. | 1624 | |
Question number: 816
» Logical and Analytical Reasoning
Question
‘Better’ is related to ‘worse’ as ‘complicated’ is related to ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Durable | |
b. | Hard | |
c. | Easy | |
d. | Tricky | |
Question number: 817
Question
A well of diameter 80 cm has a stone wall around it. If the length of the outer edge of the wall is 440 cm, then the width of the wall is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 20 cm | |
b. | 30 cm | |
c. | 60 cm | |
d. | 50 cm | |