What is the total length in inches of 136.8 inches and 85.8cm? Remember to round correctly to 2 decimal places.

Question

BlackTom AI · Accepted Answer

We start by restating the task in my own words: add 136.8 inches to the length that 85.8 cm converts to in inches, and round the final result to 2 decimal places.
Step 1: Convert 85.8 cm to inches. The conversion factor is 1 inch = 2.54 cm, so inches = cm ÷ 2.54. Calculate 85.8 ÷ 2.54.
Step 2: Do the division accurately: 85.8 ÷ 2.54 ≈ 33.778... inches. For purposes of the next step, we’ll keep the more precise value 33.778... inches, and then we’ll apply final rounding to two decimals.
Step 3: Add the converted length to 136.8 inches: 136.8 + 33.778... ≈ 170.578... inches.
Step 4: Round the result to two decimal places. 170.578... rounds to 170.58 inches.
Step 5: Compare with the given potential answer: if an answer option exists, you would check whether 170.58 matches the expected rounding. In some datasets, rounding choices might yield 170.59 due to using a different intermediate rounding approach (e.g., rounding the conversion to two decimals first, then adding). Here, using the precise conversion and then rounding the final sum yields 170.58.
Step 6: Identify potential sources of discrepancy: (a) rounding the cm-to-inch conversion early (e.g., 33.78 inches) before addition can produce 136.8 + 33.78 = 170.58, which matches the precise final rounding; (b) if one rounded 33.78 to 33.79 before adding, the sum would be 170.59, which explains how a 170.59 result could appear.
Step 7: Summary of reasoning: convert cm to inches using the exact factor, add to the inch value, then round the final sum to two decimals. The precise calculation yields 170.58 inches, while an intermediate rounding in the conversion step could lead to 170.59 if 33.78 is rounded up to 33.79 before addition.

ECON1101-Microeconomics 1 - T1/2025

What is the total length in inches of 136.8 inches and 85.8cm? Remember to round correctly to 2 decimal places.

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ECON1101-Microeconomics 1 - T1/2025

What is the total length in inches of 136.8 inches and 85.8cm? Remember to round correctly to 2 decimal places.

View Explanation

Log in for full answers

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If you were asked to perform a 1-mile walking journey on a common, standard outdoor track (like one seen at a local high school), you would need to complete 2 laps on the track.

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在英制单位中,英制尺寸的进位方法是 1(ft)英尺=（）(in)英寸。