Mathematics-Mensuration (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 8 - 9 of 9

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Question number: 8

» Mathematics » Mensuration

MCQ▾

Question

If the length and breadth of a rectangular plot are increased by 50 % and 20 % respectively, then the new area is how many times the original area?

Choices

Choice (4) Response

a.

½

b.

10

c.

9/5

d.

5/9

Question number: 9

» Mathematics » Mensuration

MCQ▾

Question

AD is a diameter of a circle. Two more circles pass through A and intersect AD in B and C respectively, such that AB and AC are diameters of these circles and AD > AC > AB. If the circumference of the middle circle is average of the circumference of the other two, then given AB = 4 units and CD = 2 units, what is the area, (in sq units) of the largest circle?

Choices

Choice (4) Response

a.

64 π

b.

16 π

c.

48 π

d.

128 π

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