Find the total surface area of the net.

Mathematics

1 answer:

Elanso [62]4 years ago

3 0

Answer:

87.8 square meters

Step-by-step explanation:

First of all, find the area of the three recthangles.They are all 9m long and 3m wide. 9*3 is 27, and since there are three of them, 27*3 is 81.

To find the area of the two triangles, you could do 3*2.6. Normally, you would halve the values because they are triangles but since there's two of them it cancels out.

3*2.6 is 7.8, and adding that to the area of the rectangles gets the equation 81+7.8 which comes out to 87.8 square meters.

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3 years ago

(iii) (3x + 4)(3x - 5)

kiruha [24]

Answer:

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Step-by-step explanation:

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