Bottom area: 3. 14*3 squared =28.26 (square meter)
Transverse area: 3. 14*6* 1.5=28.26 (m2)
28.26+28.26=56.52 square meters
A: ..............
Question 4:15.7/(3.14 * 2) = 2.5 (cm)
2 * 3. 14 * 2.5 * 2.5+ 15.7 * 15.7 = 285.74(cm? )
Question 5: 3.14 *10 * 40/2+(10/2)? * 3. 14+ 10 * 40 = 1 106.5(cm? ) choose me as the best answer ~