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1 year ago

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Alexis has a rectangular piece of red paper that is 4 cm wide its length is twice its width she Glooze a rectangular r Alexis ha

s a rectangular piece of red paper that is 4 cm wide its length is twice its width she glued a rectangular piece of blue paper on top of the red piece measuring 3 centimeters by 7 centimeters. How many square centimeters of red paper will be visible on top ?

2 answers:

UNO [17]1 year ago

5 0

Are you looking for the area or the perimeter?

Perimeter: 24

Area: 32

Hope this helped!

-TTL

Ierofanga [76]1 year ago

4 0

Answer:

11 square centimeters of red paper will be visible on top.

Step-by-step explanation:

Width of the rectangular red sheet = w = 4 cm

Length of the rectangular red sheet = l = 2 × 4 cm = 8 cm

Area of the rectangle = l × w

Area of the rectangular red sheet = A

$A=8 cm\times 4 cm = 32 cm^2$

Width of the rectangular blue sheet = w' = 3 cm

Length of the rectangular blue sheet = l' = 7 cm

Area of the rectangular blue sheet = A'

$A'=7 cm\times 3 cm = 21 cm^2$

After gluing blue paper on the top of red paper. The area of red paper that will be visible from the top is:

A - A' = $32 cm^2-21 cm^2=11 cm^2$

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Answer:

These are the rectangular prisms that have a surface area greater than 140 square feet

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Step-by-step explanation:

The formula to find the surface area of a rectangular prism is SA=2(wl+hl+hw)

All you have to do is go through all the options given to you to figure out which retangular prisms have a surface area greater than 140 square feet.

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