4. A square table of side 90 cm has a frame of width 3 cm around it. Find the outer area of the table
and the area of the frame.
answer is 9216 sq.cm;1116 sq.cm
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Given:
A square table of side 90 cm has a frame of width 3 cm around it.
To find:
(1). The outer area of the table
(2). The area of the frame.
(2). Finding the area of the frame:
The area of the frame is,
= [Outer area of the table] - [Area of the square table]
= [9216 cm²] - [8100 cm²]
= 1116 cm²
Solution:
The side of the square table = 90 cm
∴ Area of the square table = side² = 90² = 8100 cm²
(1). Finding the outer area of the table:
The width of the frame around the square table = 3 cm
So,
The length of the outer side of the table = 90 + (2 × 3) = 90 + 6 = 96 cm
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