1/3×3. 14×6×6x = 282.6
37.68x=282.6
x=7.5
Answer: The height of the conical part is 7.5 cm.
(2) let the water rise by x cm, according to the meaning of the question.
32x=4×4×8
32x= 128
x=4
The water level rose by 4 cm.
(3 3) 10/0cm =0. 1 m
Radius of cone bottom: 62.8÷3. 14÷2.
=20÷2
= 10 (m)
The volume of the cone:1/3× 3.14×10×10× 6.
=628 cubic meters
Meters paved: 628÷ 10÷0. 1=628 (meters)