Verified answer

Ответ:

S=12 ед.кв.

Пошаговое объяснение:

Дано:

Е( -3; 1 )

F( 0; 4 )

H( -1; -1 )

----------------

S(H;E;F;K) = ?

S(H;E;F;K)= EH×EF

EH=[((X(H)-X(E))^2+((Y(H)-Y(E))^2]^1/2×

×[((X(F)-X(E))^2+((Y(F)-Y(E))^2]^1/2=

=[(-1-(-3))^2+(-1-1)^2]^1/2×

×[(0-(-3))^2+(4-1)^2]^1/2=

=(2^2+4)^1/2×(3^2+3^2)^1/2=

=8^1/2×18^1/2=144^1/2=

=12(ед.кв) .