195 yards²
Area of rhombus (formula)
A = (d₁ₓd₂)/2
d₁ = 2ₓ7,5yd = 15 yd
d₂ = 2ₓ13yd = 26 yd
A = (15ydₓ26yd)/2
= 15ydₓ13yd
= 195 yards²