# Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 14 - 18 of 104

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## 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.

## Question number: 16

» Surface Area and Volumes

MCQ▾

### Question

A circular park of 20 metre diameter has a circular path just inside the boundary of width 1 metre. The area of path is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 17

» Surface Area and Volumes

MCQ▾

### Question

A covered wooden box has the inner measures as 115 cm, 75 cm, 35 cm and the thickness of wood is 2.5 cm. Then the volume of the wood is________

### Choices

Choice (4) Response

a.

80, 000 cu. Cm

b.

82, 125 cu. Cm

c.

85, 000 cu. Cm

d.

84, 000 cu. Cm

## Question number: 18

» Surface Area and Volumes

MCQ▾

### Question

A cylindrical vessel 80 cm in diameter is partially filled with water. A sphere, 80 cm in diameter is gently dropped into the vessel. To what further height will water rise in the cylinder?

### Choices

Choice (4) Response

a.

30.33 cm

b.

53.33 cm

c.

15.33 cm

d.

40.33 cm

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