Question

СРОЧНО СРОЧНО СРОЧНО СРОЧНО СРОЧНО ДАМ 13 БАЛЛОВ. 31 номер

Answer 1

1)S1 = d * c      

S2 = d * c

S3 = ( b - c ) * a

S = 2d * c + (b-c) * a

2) S1 = d*b

S2 = d * b

S3 = (b-c) * (a-2d)

S = 2d * b + (b-c) * (a-2d)

3) S1 = b * a

S2 = c * (a-2d)

S = b * a - c * (a-2d)