Question

If the circumference of a circular sheet is 154 m, find its radius. Also find the area​

Answer 1

Answer:

radius = 7m

$\pi \: r {}^{2}$

$\pi = \frac{22}{7}$

154m= 22/7 × r ×r

$\frac{154 \times 7}{22} = \: r {}^{2}$

$49m {}^{2} = r {}^{2}$

therefore r (radius) = 7m

Answer 2

$\huge \tt \red{QUESTION}$

If the circumference of a circular sheet is 154 m, find its radius. Also find the area.

$\huge \tt \red{ANSWER}$

(i) Circumference of circular sheet

$\sf= 154m$

$\sf2\pi r = 154$

$\sf \: r = 154$

$\sf2 \times \frac{22}{7}$

$\sf = \frac{154 \times 7}{2 \times 22} = 24.5$

Hence, radius (r) = 24.5m.

(ii) Area of circle $\huge= \pi r ^{2}$

$= \frac{22}{7} \times (24.5) ^{2}$

$= \frac{22}{7} \times 24.5 \times 24.5 = 1886.5m ^{2}$

Hence, area of sheet = 1886.5m²

Hope It Helps You!!...