Geometrymedium · Past Paper
Find the area of an equilateral triangle with side 6 cm.
A9 sqrt(3) sq. cm
B18 sqrt(3) sq. cm
C36 sq. cm
D12 sqrt(3) sq. cm
✓ Correct Answer: A — 9 sqrt(3) sq. cm
Area = (sqrt(3)/4) * side^2 = (sqrt(3)/4) * 36 = 9 * sqrt(3) sq. cm.
Share this question
More from Geometry
- Find the area of the ring between two concentric circles whose circumferences are 88 cm and 66 cm.
- If the distance of a point from the center of a circle is less than the radius, where does the point lie?
- The center of the circle x^2 + y^2 - 4x + 6y - 12 = 0 is:
- Find the equation of a line passing through (1, -2) and having a slope of 3.
- Two lines are perpendicular if they intersect at an angle of: