Find the length of arc AB. Use 3.14 for pi. Round to the nearest tenth. ​

arc AB = 12.40°

Step-by-step explanation:

diameter = 7.9 x 2 = 15.8

circumference = 15.8 x 3.14 = 49.612

since the central angle of arc AB is 90 °

90/360 x 49.612 = 12.40

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!