How long of the sides?

√85

Step-by-step explanation:

s=[√d1)²+(d2)²]/2

s=(√12²+14²)/2

a=(√340)/2

s=(2√85)/2

s=√85

345

step-by-step explanation:

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!