51sin(47) because 51 is the hypotenuse and a is the opposite so we use sine because sine=opp/hypotenuse therefore sin(47)=a/51 then rearrange the formula to make a the subject the final answer is 37.3 to the nearest 3 significant figures
Answer:

Step-by-step explanation:
Isolate the variable by doing operations to both sides of the equation.
The work is shown below:

Type surface area of a triangular prism on google for a calculator
or height X Base side A X base side B X base side C
the base is the triangular side the height is the long part

We need to solve for x
To get x alone we need to remove the denominator 5
To remove denominator 5 we multiply by 5 on both sides

2x = 50
2x means 2 times x
2 is multiplied with x. so to remove 2 we divide by 2

So x= 25