Can someone pls show how to do this is with explanation

60⁰

Step-by-step explanation:

Angle sum of a triangle=180⁰

This is an equilateral triangle as all the angles are equal.

$90.2

Step-by-step explanation:

sales tax = 10%

wooden toy chest = $82

first you would need to find what 10% of 82 is so...

82 * .10 = 8.2

so 8.2 is 10%

then you would add the 8.2 and 82 together which would equal

$90.2

I hope that helped! :)