Question

Find the diameter of circle whose area is 154 cm².


plz tell me answer fast​

Answer 1

Step-by-step explanation:

d≈14cm

mark as brainlist....................

Answer 2

${\huge{\underbrace{\rm{Question}}}}$

Find the diameter of circle whose area is 154 cm².

${\huge{\underbrace{\rm{Answer}}}}$

Given:

• Area of the circle is 154 cm²

To find:

Find the diameter of the circle

Solution:

Area of the circle is 154 cm²

We know that,

$\boxed{\bf{\red{Area\:of\:circle=πr^{2}}}}$

Where,

• r = radius of the circle
• π = 22/7

ATQ,

$\sf{:\implies πr^{2}=154}$

$\sf{:\implies \dfrac{22}{7}×r^{2}=154}$

$\sf{:\implies r^{2}=154×\dfrac{7}{22}}$

$\sf{:\implies r^{2}=49}$

$\sf{:\implies r=\sqrt{49}}$

$\boxed{\bf{\pink{⟹\:r\:=\:7}}}$

.°. Radius of the circle (r) = 7 cm

Therefore, diameter of the circle (2r)=2×7 = 14 cm

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬