Jiangsu education printing plate fifth grade elementary school mathematics exercises and tests page 8 answers to 5 questions.
Book 1: S=(A+B)*H/2
=( 12+ 16)*2/2
=28*2/2
=56*2
=28 square meters
56/28 = 2 kg
Volume II: Solutions ......
5X=0.65
X=0.65/5
X=0. 13