CAT 2015 Quantitative Ability

Question : 27 of 34

Marks: +1, -0

An isosceles right angled triangle with length of its egual sides being 30 cm, is rotated 180° about its centroid to form a new triangle Find the area of the region common to the original and the new triangles,

275 sq. cm
300 sq. cm
375 sq. cm
350 sq. cm

Validate

Solution:

Area of the shaded region =

1/2 × 30 × 30 - 3 ×(1/2 × 10 × 10) = 300 sq.cm

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