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3 years ago

I need help with compound shapes please

Mathematics

1 answer:

Alinara [238K]3 years ago

7 0

Answer:

Area : 114.25 in^2

Perimeter : 47.7 in

Step-by-step explanation:

In this problem when finding the perimeter you have a normal triangle and a semi-circle. so you add the 2 sides of the triangle and find the circumference of a semi-circle with a radius of 5.

17 + 15 + {(3.14)[2(5)]}/2 =

32 + {(3.14)[10]}/2 =

32 + 31.4/2 =

32 + 15.7 =

47.7

When finding the are you have to make the shapes as easy as possible. In this case you divide it to be triangle and semi-circle. Then add the 2 areas together.

[15(10)]/2 + {(3.14)[(5)^2]}/2

150/2 + {(3.14)[25]}/2

75 + 78.5/2

75 + 39.25

114.25

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