Question

10. Find the perimeter and area of an equilateral triangle whose height is 12 cm. Write your
answers, correct to two decimal places.
11. The lengths of two sides of a right triangle containing the right angle differ by 2 cm. If the
area of the triangle is 24 cm, find the perimeter of the triangle.
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Answer 1

a=12/V3=4V3

Area =v3/4 x (4v3)^2 = 12v 3 cm2

Perimeter=3a =3x4 v3=12v 3cm