What is the perimeter of △DEF to the nearest tenth? DFE is a right angle triangle. The length of DE is 18. Angle D is 38 degree and angle E is 52 degree.

Step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168