What is a collection of numbers and mathematical operations

Algebraic (or numeric) expression (also referred to as phrase) A mathematical expression (numeric/algebraic) is one or a group of mathematical symbols representing a number or quantity. It may include numbers, variables, constants, operators, and grouping symbols. One side of an equation is also an expression.

Step-by-step explanation:

dekh mujhe brainliest mark karde agar nahi kiya toh tujhe report kardunga

396cm

Step-by-step explanation:

55 x 40 = 2,200

2,200 x 180 = 396,000

396,000 / 1000 = 396

396cm

(I don't know for sure).