Use the net to find the surface area of the prism.
2 answers:
Answer:
Surface area of prism = 286 ft².
Step-by-step explanation:
Given : A prism with measurements of 5ft, 9ft, & the height of 7ft..
To find : What is the surface area of the prism .
Solution : We have given that a prism with
Length =5 ft,
Width = 9 ft .
Height = 7 ft.
Surface area of prism =
Plugging the values
Surface area of prism = 2 ( 5* 9 + 9 * 7 + 7 * 5)
Surface area of prism = 2 (45+ 63 + 35)
Surface area of prism = 2 ( 143).
Surface area of prism = 286 ft².
Therefore, Surface area of prism = 286 ft².
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Answer:
Step-by-step explanation:
Given Data,
Q=23000 J
c=4.184 J/g °c
Δt= 68 °c
m=?
By using this equation,
Q=mcΔt
They forget to say "not to scale". I'm guessing this is trig because I don't see another way to do it.
Let's consider x=chord PQ first. By the Law of Cosines
We have an isosceles triangle formed by two radii of 9 cm and x=PQ. By the Law of Cosines again,
The area of the circle is the fraction given by the angle,
Answer: 24.7 sq cm