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weqwewe [10]
3 years ago
8

Triangle ABC and triangle DEF are similar.

Mathematics
1 answer:
cestrela7 [59]3 years ago
4 0

Answer:

x=25

Step-by-step explanation:

Since both triangles are similar, you can set them up as a proportional problem

x/20=32/(8+20+12) Solve for x, you can so cross multiply method.

32x=800

x=25

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Answer:

Step-by-step explanation:

ABCD is a square.

side = 24 cm

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Semicircle:

d = 24 cm

r = 24/2 = 12 cm

Area of semi circle =πr²

                               = 3.14 * 12 * 12

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Area of shaded region = area of square - area of semicircle  + area of semicircle

  = 576  - 452.16 + 452.16

  = 576 cm²

Perimeter:

Circumference of semicircle = 2πr

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Perimeter = 2* circumference of semicircle + 24 + 24

                = 2 * 75.36 + 24 + 24

                = 150.72 + 24 + 24

                 = 198.72 cm

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