Crystal bought b boxes of cookies to bring to a party. Each box contains 18 cookies. She decides to keep two boxes for herself.
She brings 90 cookies to the party. Which equation can be used to find the number of b boxes Crystal bought?
A) 2b − 18 = 90
B) 18b − 2 = 90
C) 18b − 36 = 90
D) 36 − 18b = 90
A) 2b − 18 = 90
B) 18b − 2 = 90
C) 18b − 36 = 90
D) 36 − 18b = 90
2 answers:
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Answer:
1206 square centimeters
Step-by-step explanation:
Hello, I can help you with that
a tin is a cylinder,a cylinder is formed by 2 circles anda 1 rectangle
let's remember
Area of the circle
Area of the rectangle
the length of the rectangle is the height of the tin (16 cm)
and the wide is equal to the perimeter of the circle
perimeter of the circle(P)
so, the area of the rectangle is
Step one
find the total area:
the total area is equal to 2 circles + 1 rectangle
Step two
put the values into the equation
height = 16 cm
radius= 8 cm
so, the total area is 1206.37 square centimeters
I hope it helps, have a great day.