IMO- Mathematics Olympiad Class 9: Questions 239 - 243 of 919

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 239

» Surface Area and Volumes

MCQ▾

Question

Squares ABCD and EFGH are congruent, AB=10cm and G is the center of square ABCD. The area of the shaded region in the plane is ________

Given the Squares ABCD and EFGH are congruent

Given the Squares ABCD and EFGH Are Congruent

Given the Squares ABCD and EFGH are congruent and AB is 10 cm and G is the center of square ABCD and fined the area of the shaded region in the plane

Choices

Choice (4) Response
a.

125cm2

b.

75cm2

c.

175cm2

d.

100cm2

Question number: 240

» Surface Area and Volumes

MCQ▾

Question

27 metal balls each of radius r are melted together to from one big sphere of radius R. Then the ratio of surface area of the big sphere to that of a ball is ________

Choices

Choice (4) Response
a.

3

b.

9

c.

3

d.

27

Question number: 241

» Lines, Angles and Quadrilaterals

MCQ▾

Question

A running track is the ring formed by two concentric circles. It is 15 feet wide. The circumferences of the two circles differ by about ________

Choices

Choice (4) Response
a.

75 feet

b.

94 feet

c.

65 feet

d.

90 feet

Question number: 242

» Lines, Angles and Quadrilaterals

MCQ▾

Question

From the adjoining figure AB DE . The value of x is ________

Image of adjoining figure AB is parallel to DE

Image of Adjoining Figure AB Is Parallel to DE

Adjoining figure AB is parallel to DE find the value of x

Choices

Choice (4) Response
a.

45°

b.

25°

c.

55°

d.

35°

Question number: 243

» Surface Area and Volumes

MCQ▾

Question

A rectangle is divided into four smaller rectangles, as shown in the figure. Three of them have areas 9units2 , 21units2 and 38units2 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.

1963units2

b.

5315units2

c.

1553units2

d.

6319units2

Sign In