"The speed turned out to be very large."

Translation: Скорость оказалась очень большой.

[Reylo75]

In English it would make more sense to say, "The speed turned out to be very great."

[Theron126]

If скорость is feminine, why большой instead of большая? Or if it isn't, then why оказалась?

[Norrius]

It is feminine, it's just «очень большой» is in Instrumental.

[Theron126]

Thanks!