Sarah wants to buy a carpet for a square room with an area of 400sq ft.
the length of the room is 20ft.
Area is a quantity that describes the extent of an area on a plane or curved surface. The area of a planar region or planar region refers to the area of a shape or planar layer, and surface area refers to the area of an open surface or boundary of a three-dimensional object. Wikipedia
The area is the area occupied by a two-dimensional figure. That is, it is a quantity that measures the number of unit squares that cover the surface of a closed figure. The standard unit of area is the square unit, commonly expressed in square inches, square feet, and so on.
Learn more about area here
brainly.com/question/17713367
#SPJ1
Step-by-step explanation:
Given: 
Derivative of a power function 
:
Therefore,
Answer:
#1: x/4 - 3/4
#2: x/14 + 9/2
Step-by-step explanation:
because i said so, you should mark me brainliest
, .
........................................
