Answer: D
Step-by-step explanation:
The pythagorean theorem shows that
.
This shows that the two shaded squares are equal, so D is incorrect.
Answer:
602.88cm²
Step-by-step explanation:
Find the image of the cylinder attached
Surface area of a cylinder = A=2πrh+2πr²
r is the radius = 4cm
Height h = 20cm
Substitute
A = 2πr(r+h)
A = 2π(4)(4+20)
A = 8π(24)
A = 192π
A = 192(3.14)
A = 602.88cm²
Hence the surface area of the cylinder is 602.88cm²
Answer:
C
Step-by-step explanation:
You just change the mixed number into an improper fraction.
4 3/5
5x4=20
20+3=23
23/5