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प्रश्न
The semi-perimeter of a triangle having sides 15 cm, 20 cm and 25 cm is
विकल्प
60 cm
45 cm
30 cm
15 cm
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उत्तर
30 cm
Explanation;
Hint:
l = 15 cm, b = 20 cm, h = 25 cm
Semi-perimeter = `("a" + "b" + "c")/2`
= `(15 + 20 + 25)/2`
= 30 cm
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