Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 52 - 56 of 104

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Question number: 52

» Surface Area and Volumes

MCQ▾

Question

The altitude drawn to the base of an isosceles triangle is of length 8 cm and the perimeter is 32 cm. the area of the triangle is ________

Choices

Choice (4) Response
a.

32cm2

b.

40cm2

c.

56cm2

d.

48cm2

Question number: 53

» Surface Area and Volumes

MCQ▾

Question

A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these is 1.5 cm and 2 cm respectively. The radius of the third ball is________.

Choices

Choice (4) Response
a.

3 cm

b.

2.5 cm

c.

3.5 cm

d.

2.66 cm

Question number: 54

» Surface Area and Volumes

MCQ▾

Question

ABC is triangle in which BE, CF are medians. If BE=15cm , CF=36cm and BECF , then the area of ABC(incm2) is________

Given the ABC is triangle in which BE, CF are medians

Given the ABC Is Triangle in Which BE, CF Are Medians

Given the ABC is triangle in which BE, CF are medians. If BE is 15 cm, CF is 36 cm find the area of Triangle ABC

Choices

Choice (4) Response
a.

240

b.

120

c.

102

d.

360

Question number: 55

» Surface Area and Volumes

MCQ▾

Question

The area of a quadrilateral JKLM, in which LMK=90˚ , JMK is an equilateral triangles of side 20 cm and KL=25cm is________.

Choices

Choice (4) Response
a.

423.2cm2

b.

323.2cm2

c.

223.2cm2

d.

523.2cm2

Question number: 56

» Surface Area and Volumes

MCQ▾

Question

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder. If the height of the cylinder is 20 cm, and its base is of radius 7.5 cm, find the total surface area of the article.

Image shows the wooden article

Image Shows the Wooden Article

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder find the total surface area of the article

Choices

Choice (4) Response
a.

1374cm2

b.

3744cm2

c.

1650cm2

d.

3274cm2

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