Surface Area and Volumes (IMO- Mathematics Olympiad (SOF) Class 9): Questions 11 - 15 of 104

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Question number: 11

» Surface Area and Volumes

MCQ▾

Question

A rectangle is divided into four smaller rectangles, as shown in the figure. Three of them have areas, and as indicated. Then the area of the shaded rectangle is ________

Given the rectangle is divided into four rectangles

Given the Rectangle Is Divided Into Four Rectangles

Given the rectangle is divided into four smaller rectangles and three of them have area 9 units, 21 units, 38 unit as indicated and find the area of the shaded rectangle

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 12

» Surface Area and Volumes

MCQ▾

Question

A rectangular field has its length and breadth in the ratio. Its area is 3.75 hectares. The cost of fencing it at Rs. 5 per meter is ________

Choices

Choice (4) Response

a.

Rs. 1000

b.

Rs. 500

c.

Rs. 4000

d.

Rs. 400

Question number: 13

» Surface Area and Volumes

MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 14

» Surface Area and Volumes

MCQ▾

Question

A triangle and a trapezoid are equal in area. They also have the same altitudes. If the base of the triangle is 18 inches, the mean of the parallel sides of the trapezoid is ________

Choices

Choice (4) Response

a.

36 inches

b.

Not obtained from this data

c.

18 inches

d.

9 inches

Question number: 15

» Surface Area and Volumes

MCQ▾

Question

The area of an isosceles triangle having base 32 cm and one side 20 cm is________

Choices

Choice (4) Response

a.

b.

c.

d.

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