Datrys pi*(11,94/2)^2*7,5=

$$\pi \cdot ( \frac { 11,94 } { 2 } ) ^ { 2 } \cdot 7,5 =$$

Enrhifo

$$\frac{1069227\pi }{4000}\approx 839.768922055$$

Camau Ateb

Ehangu \frac{11.94}{2} drwy luosi'r rhifiadur a'r enwadur gyda 100.

$$\pi \times \left(\frac{1194}{200}\right)^{2}\times 7.5$$

Lleihau'r ffracsiwn \frac{1194}{200} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$\pi \times \left(\frac{597}{100}\right)^{2}\times 7.5$$

Cyfrifo \frac{597}{100} i bŵer 2 a chael \frac{356409}{10000}.

$$\pi \times \frac{356409}{10000}\times 7.5$$

Lluosi \frac{356409}{10000} a 7.5 i gael \frac{1069227}{4000}.

$$\pi \times \frac{1069227}{4000}$$