Tolong ya!!! #Bantuaku

3.Keliling persegi panjang=  2 x (p+l)
= 2 x (15+10)
= a. 50 cm

4. 22/7 x (7x2)
= c. 44 cm

5. 22/7 x 14 x 14
= a. 616

7. Lp kubus = 6 x s x s
                    = 6 x 72 x 72
                    = c. 31.104