During a hoagie sale fundraiser, a ski club sold 42 Italian hoagies and 53 roast beef hoagies. What is the ratio of Italian hoag
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Answer:
310.8m²
Step-by-step explanation:
<u>GIVEN :-</u>
- Diameter = 9m ⇒ Radius (r) = 9/2 = 4.5m
- Slant height (l) = 13m
<u>TO FIND :-</u>
- Surface area of the whole figure.
<u>FORMULAES TO KNOW BEFORE SOLVING :-</u>
- Curved surface area of cone =
(where r = radius & l = slant height)
- Curved surface area of hemisphere =
(where r = radius)
<u>PROCEDURE :-</u>
In the figure , the cone is mounted on a hemisphere.
⇒ Radius of cone = Radius of hemisphere = 4.5m
Total surface area of the figure = Curved surface area of both cone & hemisphere.
⇒
- Curved surface area of cone =
≈ 183.7m²
- Curved surface area of hemisphere =
≈ 127.1m²
∴ Total surface area = 183.7 + 127.1 = 310.8m²