* stands for multiplication symbol = stands for equal to+stands for plus sign-stands for minus sign ~ stands for division symbol ... stands for equal sign.

Question 1: lateral area 6*3. 14*2.6=48.984 (square decimeter) Bottom area: (6~2)*(6~2)*3. 14=28.26 (square decimeter) sheepskin required: 28.26 * 2.

Question 2: Bottom diameter: 0.6~2=0.3 (m) Bottom area: 3. 14*0.3*0.3=0.2826 (m2) Side area: 3.14 * 0.6 *1=/kloc.

The third problem: the radius and diameter are large, and the lateral area bottom surface area is large.

4 8 5 125.6 50.24 226.08

5 10 10 3 14 78.5 47 1

Question 4: 3.14 * 2 * 0.15 = 0.942 (square meter)

Question 5: Bottom area: 3.14 * (24 ~ 2) * (24 ~ 2) = 56.52 (square centimeter).

Side area: 3. 14*24*30=2260.8 (square centimeter)

Surface area: 56.52*2+2260.8=2373.84 (square centimeter)

Look at the process carefully and you will understand, and add more reward points.