IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 250 - 255 of 931

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Question 250

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Question

MCQ▾

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.18 inches
b.9 inches
c.Not obtained from this data
d.36 inches

Question 251

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Question

MCQ▾

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 252

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Question

MCQ▾

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 253

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Question

MCQ▾

What is the point of concurrency of the perpendicular bisectors in a triangle called ________.

Choices

Choice (4)Response
a.Centroid
b.Incentre
c.Orthocentre
d.Circumcentre

Question 254

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Question

MCQ▾

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 255

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Question

MCQ▾

A triangle and a parallelogram are equal in area. They also have the same altitude. If the base of the triangle is 22 inches, the area of the trapezoid is ________.

Choices

Choice (4)Response
a.19 inches
b.11 inches
c.Not obtainable from these data
d.2 inches