If the sides of a triangle are 11.5 cm, 8.7 cm and 9 cm, then their perimeter is ______________ cm.
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If the sides of a triangle are 11.5 cm, 8.7 cm and 9 cm, then their perimeter is ______________ cm.
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Step-by-step explanation:
perimeter of triangle=sum of all sides of the triangle
=11.5+8.7+9
=29.2cm
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Answer:
the perimeter of the triangle is 29.2 cm
Step-by-step explanation:
11.5+8.7+9= 29.2 cm