EM-2051

Triangles, quadrilaterals and polygons

E Math · Secondary 4 · Medium · Triangles, quadrilaterals and polygons

A regular pentagon has side length 4 cm. On each side, an identical equilateral triangle of side 4 cm is constructed outwards. Find the total area of the star-shaped figure formed. (Take

\sqrt{3}=1.732

62.1 cm $^2$
34.6 cm $^2$
27.5 cm $^2$
69.0 cm $^2$

Loading problem…