allery12 cm भुजा वाले एक समबाहु त्रिभुज की ऊँचाई (शीर्षलम्ब) क्या है?
A9 cm
B6√2 cm
C6 cm
D6√3 cm
Answer & Solution
Correct answer: D. 6√3 cm
शीर्षलम्ब आधार को 6 cm और 6 cm में विभाजित करता है, अतः पाइथागोरस प्रमेय से यह √(144 - 36) = √108 = 6√3 cm है।
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