House = 20.5 * 10 = <<20.5*10=205>>205 square feet

Porch = 6 * 4.5 = <<6*4.5=27>>27 square feet

205 + 27 = <<205+27=232>>232 square feet

232 square feet of shingles will be needed.

# Answer

232
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The house is 20.5 feet by 10 feet. The porch measures 6 feet by 4.5 feet. The house and the porch need shingles. How many square feet of shingles will be needed to roof the house and the porch?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
232
The house is 20.5 feet by 10 feet. The porch measures 6 feet by 4.5 feet. The house and the porch need shingles. How many square feet of shingles will be needed to roof the house and the porch?
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