Please answer these 4 questions (or just some lol just please show work)

What is the area of the triangle 10 13 12

What is the result of the following division?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.