IMO- Mathematics Olympiad Class 8: Questions 472 - 476 of 1029

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Question number: 472

» Mensuration

MCQ▾

Question

A quadrilateral whose one diagonal is 4 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 1.5 cm, then the area of quadrilateral is ________.

Choices

Choice (4) Response

a.

8m2

b.

9m2

c.

10m2

d.

11m2

Question number: 473

» Mensuration

MCQ▾

Question

The number of surfaces in right circular cylinder is________.

Choices

Choice (4) Response

a.

1

b.

4

c.

3

d.

2

Question number: 474

» Mensuration

MCQ▾

Question

If the area of a cylinder with radius r = 1 and height h = 2 is equal to area of a cone with radius r = 1 and height h, the height of the cone is________.

Choices

Choice (4) Response

a.

26

b.

23

c.

22

d.

25

Question number: 475

» Mensuration

MCQ▾

Question

A quadrilateral whose one diagonal is 5.5 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 3.5 cm, then the area of quadrilateral is ________.

Choices

Choice (4) Response

a.

10m2

b.

16m2

c.

15m2

d.

11m2

Question number: 476

» Mensuration

MCQ▾

Question

ABC is a right-angled triangle with BAC=90° . AH is drawn perpendicular to BC where H lies on BC. If AB = 30 cm and AC = 50 cm, then BH = ________.

Right-angled triangle ABC with AB = 30 cm, AC = 50 cm

Right-Angled Triangle ABC With AB = 30 Cm, AC = 50 Cm

Find out BH of a right-angled triangle ABC using given measure when AH is perpendicular to BC

Choices

Choice (4) Response

a.

50

b.

42

c.

40

d.

25

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