IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 458 - 463 of 1042

Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 458

Edit

Question

MCQ▾

The radius of a cylinder is tripled but its lateral surface area is unchanged. Then its height must be________.

Choices

Choice (4)Response
a.Halved
b.Constant
c.One third
d.Doubled

Question 459

Edit

Question

MCQ▾

A cylindrical tower is 7 meters in diameter and 15 meters height. The cost of white washing its curved surface at 75 paisa per is

Choices

Choice (4)Response
a.250
b.247
c.240
d.257

Question 460

Edit

Question

MCQ▾

A hoop is resting vertically at staircase as shown in the diagram. AB = 8 cm and BC = 4 cm. The radius of the hoop is________.

A hoop resting vertically at stair case

A Hoop Resting Vertically at Stair Case

Loading image

Choices

Choice (4)Response
a.12 cm
b.11 cm
c.14 cm
d.10 cm

Question 461

Edit

Question

MCQ▾

The radius of a cylinder is doubled but its lateral surface area is unchanged. Then its height must be________.

Choices

Choice (4)Response
a.Tripled
b.Constant
c.Doubled
d.Halved

Question 462

Edit

Question

MCQ▾

Between a square of perimeter 36 cm and a circle of circumference 36 cm, which figure has larger area and by how much?

Choices

Choice (4)Response
a.Square, 22
b.Circle, 26
c.Circle, 22
d.All of the above

Question 463

Edit

Question

MCQ▾

Two rectangles ABCD and DBEF are as shown in the figure. The area of rectangle DBEF in square units is________.

Two rectangles ABCD and DBEF with AB = 5 and AD = 12 are given

Two Rectangles ABCD and DBEF with AB = 5 and AD = 12 Are Given

Loading image

Choices

Choice (4)Response
a.90
b.60
c.40
d.70