厚 means thick and is a JLPT N2 kanji. It has 9 strokes and uses the mountain slope radical (厂).
Stroke order · 9 strokes
On'yomi (音読み)
コウ
Kun'yomi (訓読み)
あつ(い)、あか
Radical
厂 · mountain slope
Strokes
9
How to remember 厚
Layers piled up beneath a mountain slope (厂) — thickness. Three あつい brothers: 暑い (hot day), 熱い (hot object), 厚い (thick book) — only the kanji can save you.