The base of a right prism is a triangle whose perimeter is 32 cm and the inradius of the triangle is 6 cm. If the volume of the prism is 576 cc, then its height is :एक लम्ब प्रिज्म का आधार एक त्रिभुज है, जिसका परिमाप 32 सेमी है और त्रिभुज की अंतः त्रिज्या 6 सेमी है, यदि प्रिज्म का आयतन 576 घन सेमी है, तो इसकी ऊँचाई है :
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Correct answer: C. 6 cm6 सेमी
Explanation
Area of triangle = inradius x semi-perimeter = 6 x (32/2) = 6 x 16 = 96 cm2. Volume = base area x height, so height = 576 / 96 = 6 cm. Hence the answer is 6 cm.त्रिभुज का क्षेत्रफल = अंतः त्रिज्या x अर्द्धपरिमाप = 6 x (32/2) = 6 x 16 = 96 सेमी²। आयतन = आधार का क्षेत्रफल x ऊँचाई, अतः ऊँचाई = 576 / 96 = 6 सेमी। अतः उत्तर 6 सेमी है।More Mathematics & Numerical Ability questions
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