Please help me!!!! I don’t understand
1 answer:
Answer:
<h2>m∠EFG = 126°</h2><h2>m∠GFH = 54°</h2>Step-by-step explanation:
If ∠EFG and ∠GFH are a linear pair, then m∠EFG + m∠GFH = 180°
(look at the picture).
We have
m∠EFG = 5n + 16
m∠GFH = 2n + 10
Substitute:
(5n + 16) + (2n + 10) = 180 <em>combine like terms</em>
(5n + 2n) + (16 + 10) = 180
7n + 26 = 180 <em>subtract 26 from both sides</em>
7n + 26 - 26 = 180 - 26
7n = 154 <em>divide both sides by 7</em>
7n/7 = 154/7
n = 22
Insert the value of n into expressions that specify angle measures:
m∠EFG = 5n + 16 → m∠EFG = 5(22) + 16 = 110 + 16 = 126°
m∠GFH = 2n + 10 → m∠GFH = 2(22) + 10 = 44 + 10 = 54°
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Answer:
Part a) The lateral area is
Part b) The area of the two bases together is
Part c) The surface area is
Step-by-step explanation:
we know that
The surface area of a right cylinder is equal to
where
LA is the lateral area
B is the area of the base of cylinder
we have
Part a) Find the lateral area
The lateral area is equal to
substitute the values
Part b) Find the area of the two bases together
The area of the base B is equal to
so
the area of the two bases together is
Part c) Find the surface area of the cylinder
we have
substitute