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Kalie puts 6 stickers on her desk. Each sticker is 1/2 centimeters wide by 3/5 centimeter long . What was the total area, in square centimeters of all Kali's stickers? SHOW YOU WORK PLEASE AND EXPLAIN.

Elana is using wrapping paper to cover aboard. Each piece of paper is 2/5 yards long and 1/4 yard wide. Elana uses 4 pieces of wrapping paper to cover the entire board. What is the total area in square feet, of the board? SHOW YOUR WORK PLEASE.

Respuesta :

Answer:

a) 1.8 [tex]cm^2[/tex]

b) 3.6 [tex]feet^2[/tex]

Step-by-step explanation:

Conversion and calculation of areas

The area of a rectangle is A=wh, where w is the width and h is the height. There are 3 feet in one yard

a)

We are told Kalie put 6 stickers, each one of 1/2 centimeters (0.5 cm) wide by 3/5 (0.6 cm) centimeter long. The area of one sticker is

A=(0.5)(0.6)=0.3 [tex]cm^2[/tex]

Assuming there is no overlapping, the 6 stickers have a total area

6*0.3 [tex]cm^2[/tex]=1.8 [tex]cm^2[/tex]

b)

Each of Elana's wrapping papers measures 2/5 yards long and 1/4 yard wide. Converting them to feet we have

long=2/5*3=1.2 feet

wide=1/4*3=0.75 feet

Area of each paper=1.2 feet*0.75 feet=0.9 [tex]feet^2[/tex]

Area of the entire board, assuming no overlapping and no space left uncovered=4*0.9 [tex]feet^2[/tex]

Area of board=3.6 [tex]feet^2[/tex]