Answer:
1240.4 mm²
Step-by-step explanation:
SA of Pentagonal pyramid:
(as)(5/2) + (sl)(5/2)
↑ ↑
base area lateral area
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a: apothem (in-radius) length, s: side length.
l: slant height.
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Since we are already given the base area which is 440.4 mm². All we need to do is find the lateral area and add both areas together.
Given that the triangular face of the lateral part has a side/base length of 16mm, and a 20mm slant height.
A triangle has an area of ½bh and since there are 5 of these faces total, (5)(½bh) = (5/2)(bh). In a three dimensional perspective, b will be s and h will be l so (sl)(5/2).
With this information the surface area is:
(16)(20)(5/2)mm + (440.4 mm²) →
800 mm² + 440.4 mm² =
1240.4 mm²
Yes the line of the first angle measured 50 is 60
Answer:
400
Step-by-step explanation:
240/60=4, meaning 4 people per every percentage. Which when 4 is multiplied by 100, you get 400=100%
Answer:
1. C 2. B
Step-by-step explanation:
1. 0.75 is equivalent to 3/4.
We can put this in mixed number form to get 6 3/4.
2. When I was in sixth grade, my teacher taught me a trick to form a number into an improper fraction.
Multiply the whole number by the denominator, then add the numerator. Then, put that number over the denominator.
47/8. That is B.
Hope it helped!
