Triangle abc is right angled at a. AD is perpendicular to BC. If AB is 5cm, BC is 13cm,AC is 12cm. Find the area of triangle ABC. Also find the length.
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Area of triangle = 1/2 x bh
= 1/2 x 5 x 12
= 30 cm^2
Length = AB + BC + AC
= 5 + 13 + 12
= 30 cm
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