Explain how estimation you to place the decimal point when multiplying 3.9 times 5.3

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

Brent wants to know what is 5 x 1/2

What is the circumference of the pie