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Question

Find the area of the following composite figure using π = 3.142. Round your answer to 2 decimal places.


  1. 1145.45 cm2

  2. 1175.50 cm2

  3. 1260.54 cm2

  4. 1045.30 cm2


Solution

The correct option is B

1175.50 cm2


l = 35 cm

w = 26 cm

r =262 = 13 cm

A = Area of a rectangle + Area of semicircle

= lw + (12) πr2

= 35 × 26 + (12) × 3.142 × 132

= 910 + 265.50

= 1175.50

So, the area is 1175.50 cm2

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