Пошаговое объяснение:
Периметр равен:
Р= 3/4 *3*2+ 3 5/6 +1 11/12 + (3 5/6- 1 1/4)+ (1 11/12-1 1/4)= 18/4 +23/6 +23/12+
+ (23/6-5/4)+ (23/12 - 5/4)= 18/4 +23/6 +23/12+ 31/12 + 8/12= 54/12+ 46/12 +
+23/12+31/12 + 8/12= 162/12= 13,5 м
Площадь равна :
S1= 3/4 * 3 5/6= 3/4 * 23/6= 69 /24= 23/8= 2 5/8 см2
S2= 3/4 * 1 1/4=3/4 *5/4= 15/16 см2
S3= 3/4 * 1 11/12= 3/4 * 23/12= 69/48=23/16 = 1 7/16 см2
Sобщ.= 2 5/8 + 15/16 + 1 7/16= 46/16 +15/16 + 23/16=84/16=5, 25 м2
