Answer:
x=105⁰
Step-by-step explanation:
42+x=147⁰
x=147-42=105⁰
find the perimeter of a triangle with sides 15 inches, 15 inches, and 21 inches length
To find the perimeter of a triangle we add all the sides of the triangle
The length of the sides of the triangle are given as 15 inches, 15 inches, and 21 inches
Perimeter of a triangle =
15 inches + 15 inches + 21 inches = 51 inches
So 51 inches is the perimeter
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<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
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