Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 38 - 42 of 104

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Question number: 38

» Surface Area and Volumes

MCQ▾

Question

The area of a quadrilateral PQRS, in which Equation , Equation is an equilateral triangles of side 12 cm and Equation is________.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 39

» Surface Area and Volumes

MCQ▾

Question

If the altitude of an equilateral triangle is Equation , its area is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 40

» Surface Area and Volumes

MCQ▾

Question

A bus stop is barricaded from the remaining part of the road, by using 75 hollow cones made of recycled cardboard. Each cone has a base diameter of 60 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 17 per m2, what will be the cost of painting all these cones? (Use Equation and take Equation )

Choices

Choice (4) Response

a.

Rs. 1645

b.

Rs. 1742

c.

Rs. 1224

d.

Rs. 1586

Question number: 41

» Surface Area and Volumes

MCQ▾

Question

The volume of the largest circular cone that can be cut of a cube whose edge is 8 cm is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 42

» Surface Area and Volumes

MCQ▾

Question

A circular park of 80 metre diameter has a circular path just inside the boundary of width 8 metre. The area of path is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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