In the triangle ABC, the midpoints of the sides AB and AC are respectively X and Y. The straight line drawn through C, parallel to AB, meets XY produced at Z. Prove
that,
i. ∆AXY≡∆CYZ
ii. BCZX is a parallelogram.

plzz help me soon, i want the correct answer immediately

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8