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Activity 1: Solve each of the following problems. (2pts each problem)
1. A rectangular iawn 42 m long by 355 m wide is surrounded by a path of width 5 m. What is the area
of the path?
2. A circular mirror of radius 24 cm is fixed to a wooden frame with a width of 3 cm. Find the area of
the mirror and the wooden frame.
3.
A picture 15 cm by 9 cm is framed on a piece of cardboard 18 cm by 13 cm. What area of the
cardboard can be seen?
Activity 1: Solve each of the following problems. (2pts each problem)
1. A rectangular iawn 42 m long by 355 m wide is surrounded by a path of width 5 m. What is the area
of the path?
2. A circular mirror of radius 24 cm is fixed to a wooden frame with a width of 3 cm. Find the area of
the mirror and the wooden frame.
3.
A picture 15 cm by 9 cm is framed on a piece of cardboard 18 cm by 13 cm. What area of the
cardboard can be seen?
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Answers & Comments
Answer:
1. ⅞
3. 108
Step-by-step explanation:
1. (h,h,h) (h,t,t) (t,t,t)
(h,h,t) (t,h,t)
(h,t,h) (t,t,h)
(t,h,h)
total number of tails occured: 7
total cases: 8
3. Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area