एक ठोस अर्धगोले को उसी आधार त्रिज्या वाले एक ठोस बेलन (सिलेंडर) से उनके समतल फलकों द्वारा जोड़ा जाता है। यदि बेलन की त्रिज्या 'r' और ऊंचाई 'h' है, तो संयुक्त ठोस का कुल पृष्ठीय क्षेत्रफल ज्ञात कीजिए।

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?