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just olya [345]
2 years ago
8

A figure is made up of a square and a rectangle. The area of the square is 64 cm². The breadth of the rectangle is the same leng

th of the square. If the total area of the figure is 232 cm², what is the perimeter of the whole figure? ​
Mathematics
1 answer:
antoniya [11.8K]2 years ago
6 0

Answer:

90 cm

Step-by-step explanation:

Let the side of the square be S

Area of the square = S² = 64

So, S = √64 = 8 cm

Let L be the length of the rectangle and B be the breadth

We know B = S = 8

Area of rectangle = BL = 8L

Total area = Area of square + area of rectangle

Total area   = 64 + 8L  = 232  (given)

Subtracting 64 from both sides yields

8L = 232-64 = 168 or L = 168/8 = 21

Perimeter of square = 4S = 4 x 8 = 32

Perimeter of rectangle = 2(B + L) = 2(8 + 21) = 2 x 29 = 58

Total perimeter = 32 + 58 = 90 cm

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