1025. Sквадрата = a * a = a^2
при а = 4.5 S = 4.5 * 4.5 = 20.25
при а = 8 и 3/7 = 59/7 S = 59/7 * 59/7 = 3481/49 = 71 и 2/49
при а = 9.4 S = 9.4 * 9.4 = 88.36
при а = 10 и 1/3 = 31/3 S = 31/3 * 31/3 = 961/9 = 106 и 7/9
1026. Vпрямоуг.пар-пипеда = a * b * c
2.5 * 1.6 * 3.5 = 14
2.2 * 1.5 * 4.8 = 15.84
4 и 2/7 * 14/15 * 11 = 30/7 * 14/15 * 11 = 4 * 11 = 44
4 и 4/9 * 3/8 * 2 и 4/7 = 40/9 * 3/8 * 18/7 = 5/3 * 18/7 = 90/21 = 4 и 6/21
1027
Vпрямоуг.пар-пипеда = a * b * c
12 и 4/33 = 2 и 3/11 * 4 * h
400/33 = 100/11 * h
h = (400/33) : (100/11 )
h = 4/3 = 1 и 1/3