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3 years ago

14

What is the surface area of the figure shown ?

1 answer:

AVprozaik [17]3 years ago

6 0

A: 184

1.) find the area of the two sides (length*height)*2
5*8=40*2=80

2.) Find the area of the adjacent sides (Width*height)*2
5*4=20*2=40

3.) Find the area of the ends (length*width)*2
4*8 =32*2=64

4.) add the three areas together
40+80+64=184

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1 year ago

What is the scale factor of triangle ABC to DEF ?

bekas [8.4K]

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As shown in the figure, the lengths of the sides of ΔABC to ΔDEF are

AB = 5 units, BC = 4 units, CA = 3 units,

DE = 15 units, EF = 12 units, FD = 9 units.

We know that the scale factor is given by

$S=\dfrac{\textup{length of a side of the dilated figure}}{\textup{length of the corresponding side of the original figure}}.$

Therefore, the scale factor of dilation from from ΔABC to ΔDEF is

$S=\dfrac{DE}{AB}=\dfrac{15}{5}=3.$

Thus, the required scale factor is 3.

Option (A) is correct.

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3 years ago

Read 2 more answers

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