The weight of a bag of potatoes is 25kg, correct to the nearest kg

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Which of these tools or constructions is used to inscribe a hexagon inside a circle?