Size It Up

ALL ANSWERS · GEOGRAPHY · DAILY No. 18 · SEPTEMBER 21, 2026

Size It Up Geography answer: September 21

The five Geography silhouettes for September 21, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.

Day 18 ran from Guam (40.73 km) to Zambia (1,271 km). The widest gap was round 3, Sri Lanka against Montenegro, at 2.3×; the closest call was round 5, Paraguay against Zambia, only 1.4× apart — the kind of round that separates a 90 from a 60.

  1. ROUND 1

    Lake Tana vs Guam

    Guam · reference · 40.73 km
    Lake Tana · true height · 74.65 km

    1.8× taller than Guam

    Lake Tana extends about 75 km north to south across this outline.

  2. ROUND 2

    Northern Cyprus vs Belgium

    Belgium · reference · 270 km
    Northern Cyprus · true width · 167 km

    1.6× shorter than Belgium

    Northern Cyprus extends about 167 km east to west across this outline.

  3. ROUND 3

    Sri Lanka vs Montenegro

    Montenegro · reference · 186.1 km
    Sri Lanka · true height · 429.6 km

    2.3× taller than Montenegro

    Sri Lanka extends about 430 km north to south across this outline.

  4. ROUND 4

    Pennsylvania (US state) vs Tennessee (US state)

    Tennessee · reference · 780.1 km
    Pennsylvania · true width · 494.4 km

    1.6× shorter than Tennessee

    Pennsylvania extends about 494 km east to west across this outline.

  5. ROUND 5

    Paraguay vs Zambia

    Zambia · reference · 1,271 km
    Paraguay · true height · 920.5 km

    1.4× shorter than Zambia

    Paraguay extends about 921 km north to south across this outline.

Beat these tomorrow

Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.

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