khollier3119
05.10.2019 •
Mathematics
Acylinder has a radius of 3 cm and a height of 24 cm. what is the area of the rectangle made by the circumference and height of this cylinder?
a) 508.68 cm2
b) 480.42 cm2
c) 452.16 cm2
d) 84.78 cm2
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Ответ:
Option C.
Step-by-step explanation:
step 1
Find the circumference
The circumference of a circle is equal to
we have
substitute
step 2
Find the area of the rectangle made by the circumference and height of the cylinder
The area of the rectangle is equal to
substitute the values
Ответ:
x=55
Step-by-step explanation:
4/5x-10=34
+10 +10
5/4*4/5x=44*5/4
simplify.
x=55