draw a regular pentagon and then a triangle of the same area calculate the area
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Draw a regular pentagon and then a triangle of the same area. calculate the area
Tan 36 = 2/h (Where h = apothem) h = 2/Tan 36.
= 2.75. Area = (½ x 4 x 2.75) x 5.
= 27.53 cm2. A triangle of the same area: Assume base of triangle = 4cm.
Area = 1/2bh. 27.53 = ½ x 4 x h. 27.53 = 2h. h = 13.8 cm.
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