# Surface Area and Volumes (IMO- Mathematics Olympiad (SOF) Class 9): Questions 49 - 53 of 104

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## Question number: 49

» Surface Area and Volumes

MCQ▾

### Question

The parallel sides of a trapezium are 55 cm and 85 cm and non-parallel sides are 24 cm and 28 cm. the approximate area of trapezium is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 50

» Surface Area and Volumes

MCQ▾

### Question

In the given figure, PQ is a diameter of a circle with center O and. The area of the shaded region________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 51

» Surface Area and Volumes

MCQ▾

### Question

In the given figure, RSTV is a square inscribed in a circle with center O and radius r. The total area of shaded region is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## 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.

b.

c.

d.

## 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

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