Find the perimeter of the polygon. Round your answer to the nearest tenth.
2 answers:
Answer:
A
Step-by-step explanation:
D=sqrt((x2-x1)^2+(y2-y1)^2)
Find distance of AB:
D=sqrt((-4-2)^2+(5-0)^2)
D=sqrt(6^(2)+5^2)
D=sqrt(36+25)
D=sqrt(61)
D=7.8
Find distance of BC:
D=sqrt((4-(-4))^2+(10-5)^2)
D=sqrt(8^(2)+5^2)
D=sqrt(64+25)
D=sqrt(89)
D=9.4
Find distance of CD:
D=sqrt((8-4)^2+(7-10)^2)
D=sqrt(4^(2)+(-3)^2)
D=sqrt(16+9)
D=sqrt(25)
D=5
Find distance of DE:
D=sqrt((4-8)^2+(5-7)^2)
D=sqrt((-4)^(2)+(-2)^2)
D=sqrt(16+4)
D=sqrt(20)
D=4.5
Find distance of EA:
D=sqrt((2-4)^2+(0-5)^2)
D=sqrt((-2)^(2)+(-5)^(2))
D=sqrt(4+25)
D=sqrt(29)
D=5.4
P=7.8+9.4+5+4.5+5.4=32.1
answer is A
Answer:
Step-by-step explanation:
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Solution:
<u>Note that:</u>
- Surface area: 2(LB) + 2(BH) + 2(LH)
<u>Substitute the values given into the expression to find the surface area.</u>
- 2(7 x 10) + 2(6 x 6) + 2(6 x 10)
- => 2(70) + 2(36) + 2(60)
- => 140 + 72 + 120
- => 332 mm²
The surface area of the rectangular prism is 332 mm².
Answer:
0.6666
Step-by-step explanation:
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