Answer:
option B is correct because
1 hectameter is equal to 10000cm
747.7
d=14 we are looking for the radius divided it to half so it should be 7
the height is 10
A=2πrh+2πr2=2·π·7·10+2·π·72≈747.69905
Answer:
The prism has 6 faces. Surface area=252m²
Step-by-step explanation:
2(12×3+12×6+3×6)=252m²
Answer:
6. 135°
7. 135°
Step-by-step explanation:
You have to assume that the figure is a regular octagon, so has central angles equal to exterior angles equal to 45°.
6. A regular anything is circumscribed by a circle, so the measure of any inscribed angle is half the measure of the corresponding central angle. That is, ∠BET =∠TBA = (45°)/2, so their sum is 45°. ∠BOT is the supplement of that, 180° - 45° = 135°.
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7. ∠GIT + ∠ITS is the same measure as one internal angle of the octagon. That is the supplement of the exterior angle we identified above as being 45°.
∠GIT + ∠ITS = 135°
Answer & Step-by-step explanation:
Add 1 to both sides.
Multiply both sides by 4.
Take the square root of both sides.
Subtract 5 from both sides.