the formula for perimeter is l+l+w+w
So 9+9+6+6= 30 meters of fence
The correct answer is 4 hours because if he does 1 mile in 10 minutes keep adding 10 minutes to each mile until you get to 24miles
Since this is a right triangle the angle opposite the side 17 is also 45°
So this can be solved in two ways...
The Law of sines...
x/sin90=17/sin45
x=17/sin45
x≈24.04 to nearest hundredth
or by realizing that both sides are 17 because they are both opposite 45° angles then the hypotenuse x is
x=√(2*17^2)
x=√578
x≈24.04
If you're multiplying the 2 exponents with the same base then you add the exponents.



Hope this helps :)