9514 1404 393
Answer:
57,001 cm², or 5.7 square meters
Step-by-step explanation:
The surface area of a cylinder is given by the formula ...
A = 2πr(r +h)
A = 2π(14 cm)(14 cm +40 cm) = 1512π cm²
Then 12 cylinders will have an area of ...
12 × 1512π cm² = 18,144π cm² ≈ 57,001 cm²
Rui Feng wants to paint a total surface area of 57,001 cm², about 5.7 square meters.
Answer:
3
Step-by-step explanation:
36-27 = 9
128 + 128 = 256 divided by 8 =32
7w = 24 - 3
7w = 21
w = 21 ÷ 7 = 3
John paid x+5=68
×=63
total cost =6×63 equal 378
