Each of equal sides of isosceles right triangle is 20 cm. What is the semi perimeter of the triangle
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Answer:
SEMI PERIMETER OF THE TRIANGLE IS 34cm
Step-by-step explanation:
AB=20cm
BC=20cm
AC=?
By Pythagoras theorem,
AC^2 = AB^2 + BC^2
AC^2 = (20)^2 + (20)^2
AC^2 = 400 + 400
AC^2 = 800
AC = √800
AC = 28
TOTAL PERIMETER OF TRIANGLE,
20 + 20 + 28
= 68
THEREFORE THE SEMI PERIMETER,
68÷2
= 34cm
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