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inn [45]
3 years ago
14

How do you get 60cm2 in question 1?

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0

Answer:

Step-by-step explanation:

4*2=8, thats one rectangle (side)

8*2 is 16, thats TWO rectangles (sides)

7*4=28, thats one rectangle (front)

28*2=56, thats TWO rectangles (front and back)

7*2=14, thats one rectangle (top)

14*2=28, thats TWO rectangles (top and bottom)

add all of these surface areas together

TWO rectangles + TWO rectangles + TWO rectangles

28+56+16=100

As you can see, the 60cm2 is incorrect. 100cm2 is the real surface area of the shape

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Step-by-step explanation:

The two angles are complementary since they form a 90 degree angle.

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Combine like terms

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Divide each side by 4

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5 0
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Answer:

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