Question
Find the radius of a circle whose circumference is:
52.8cm.
52.8cm.
✓
Answer
Let the radius of the circle be r cm. Circumference of the circle (C) $=52.8\text{cm}$$\Rightarrow2\times\frac{22}{7}\times\text{r}=52.8$
$\Rightarrow\text{r}=\frac{52.8\times7}{2\times22}=8.4\text{cm}$
$\Rightarrow\text{r}=\frac{52.8\times7}{2\times22}=8.4\text{cm}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Simplify:
$\frac{2}{3}+\frac{1}{6}-\frac{2}{9}$
→$\frac{2}{3}+\frac{1}{6}-\frac{2}{9}$
In Figure, lines $I_1$ and $I_2$ intersect at $O$, forming angles as shown in the figure. If $x=45^{\circ}$, find the values of $y, z$ and $u$.
→Write the measures of the supplements of the angles given below : 0°
Write the data given below in ascending order and prepare the frequency table:
7, 8, 7, 10, 6, 8, 9, 7, 10, 5, 7, 6, 8, 5, 6, 7, 8, 9, 7, 6, 7, 8.
7, 8, 7, 10, 6, 8, 9, 7, 10, 5, 7, 6, 8, 5, 6, 7, 8, 9, 7, 6, 7, 8.
The sides of some triangles are given below. Find out which ones are right-angled triangles ? : 1.5, 1.6, 1.7
Divide:
8 by 100
8 by 100
Convert the following as a mixed fraction:
12.25
12.25
Find the area of a circle whose diameter is:
28cm.
28cm.
In the following pair of triangle (Fig.), the lengths of the sides are indicated along sides. By applying SSS condition, determine which are congruent. State the result in symbolic form.
Verify by substitution that:
x = 3 is the root of 5 + 3x = 14
x = 3 is the root of 5 + 3x = 14