Mensurationhard · Past Paper
Three circles of radius 7 cm each are placed such that each touches the other two. Find the area of the region enclosed by them.
A7.86 sq. cm
B10.5 sq. cm
C49*sqrt(3) - 77 sq. cm
D14 sq. cm
✓ Correct Answer: C — 49*sqrt(3) - 77 sq. cm
Area = Area of equilateral triangle (side 14) - 3 * Area of sector (60 deg). (sqrt(3)/4)*196 - 0.5*pi*7^2 = 49*sqrt(3) - 77.
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