Question

3. Panchatantra is a book of stories. It is popular
Among children. (Noun/ Phrase in Apposition)
4. She is a famous singer. She has won many awards.
(Adjective Clause)
5. You will succeed soon. We all know that. (Noun
Clause)
6. He learnt to swim. He wasn't afraid of water.
(Adverb Clause)

Answer 1

Given:
⇒ Total surface area of cube = 138.24 cm²
To Find:
⇒ Volume of cube
Formula used:
⇒ Total surface area of cube = 6a²
⇒ Volume of cube = a³
Now, firstly we will find the side of cube (a),
⇒ Total surface area of cube = 6a²
⇒ 138.24 = 6a²
⇒ a² = 138.24/6
⇒ a² = 23.04
⇒ a = 4.8 cm
Now, we will find the volume of cube.
⇒ Volume of cube = a³
⇒ Volume of cube = (4.8)³
⇒ Volume of cube = 110.59 cm³
Hence volume of cube is 110.59 cm³.