In a cylindrical bucket with a diameter of 3 decimeters on the bottom full of water, there is a cubic steel block with an edge length of 8 cm. After taking the steel block from the bucket, how many centimeters has the water surface dropped,
3DM = 30cm
Volume of steel block = 8 × 8 × 8 = 512 (cm3)
Bottom area of bucket = 3.14 × (30 △ 2) 178; = 706.5 (cm2)
Water level drop = 512 △ 706.5 ≈ 0.72 (CM)