A cube iron block with an edge length of 10 cm is melted and cast into a conical iron block with a bottom diameter of 20 cm. What is the height of the conical iron block? (the number obtained keeps the whole number)

A cube iron block with an edge length of 10 cm is melted and cast into a conical iron block with a bottom diameter of 20 cm. What is the height of the conical iron block? (the number obtained keeps the whole number)

V positive = A3 = 103 = 1000 (cubic centimeter); r = D △ 2 = 10 (centimeter); because: V cone = V positive = 1000 cubic centimeter, V cone = 13SH; so: H = 3V cone △ s, = 3 × 1000 △ 3.14 × 102, = 3000 △ 314, ≈ 10 (centimeter); a: the height of this conical iron block is about 10 centimeter