S = 400
Объяснение:
a = b = x
C=√(a^2+b^2) = √(2*x^2) = x√2
x = C/√2 = 40/√2 = 40√2/2 = 20√2
S = a*b/2 = x^2 / 2 = 400 * 2 / 2 = 400
S = 400
Объяснение:
a = b = x
C=√(a^2+b^2) = √(2*x^2) = x√2
x = C/√2 = 40/√2 = 40√2/2 = 20√2
S = a*b/2 = x^2 / 2 = 400 * 2 / 2 = 400