IMO- Mathematics Olympiad Class 8: Questions 465 - 471 of 1029

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Question number: 465

» Mensuration

MCQ▾

Question

The radius of the cylinder whose lateral surface area is 520 cm2 and height 5 cm, is________.

Choices

Choice (4) Response

a.

17 cm

b.

14 cm

c.

12 cm

d.

11 cm

Question number: 466

» Mensuration

MCQ▾

Question

Surface area of a cube with edge = 1.2 cm is________.

Choices

Choice (4) Response

a.

4m2

b.

5m2

c.

7m2

d.

8m2

Question number: 467

» Mensuration

MCQ▾

Question

Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.

Choices

Choice (4) Response

a.

486cm2

b.

411cm2

c.

481cm2

d.

423cm2

Question number: 468

» Mensuration

MCQ▾

Question

The ratio of areas of two squares, one having triple its diagonals than the other is________.

Choices

Choice (4) Response

a.

5: 3

b.

2: 3

c.

2: 9

d.

9: 1

Question number: 469

» Mensuration

MCQ▾

Question

The ratio of areas of two squares, one having double its diagonals than the other is________.

Choices

Choice (4) Response

a.

9: 1

b.

2: 9

c.

2: 3

d.

4: 1

Question number: 470

» Mensuration

MCQ▾

Question

Three cubes whose edges are 1 cm, 6 cm, and 8 cm respectively are melted without any loss of metal into a single cube. The edge of new cube is________.

Choices

Choice (4) Response

a.

7cm

b.

9cm

c.

8cm

d.

1cm

Question number: 471

» Mensuration

MCQ▾

Question

What is the ratio of the perimeter of the shaded region to the circumference of the circle?

A circle with center O is given

A Circle With Center O Is Given

Find out the ratio of the perimeter of the shaded region to the circumference of the circle

Choices

Choice (4) Response

a.

2+ππ

b.

2π4π

c.

2+π4π

d.

2+π2π

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