Mensuration – II (Area of Circle) — MATHS STD 7 — Question
Gujarat BoardEnglish MediumSTD 7MATHSMensuration – II (Area of Circle)2 Marks
Question
Find the radius of a circle whose circumference is: $42\ cm.$
✓
Answer
Let the radius of the circle be $r\ cm.$
Circumference of the circle $(C) =42\text{cm}$
$\Rightarrow2\times\frac{22}{7}\times\text{r}=42$
$\Rightarrow\text{r}=\frac{42\times7}{2\times22}=6.68\text{cm}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.