Math challenge

Sasa ulikate la kazi gani 😁😁 unaweza kulikata ukapata hata ramani ya tanzania 😁😁
Hiyo kulikata/kulikunjuwa, unafanya kichwani ili unapata formular hii ya surface area of a cylinder = 2πr(h+r) (where r is the radius and h is the height).
 
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