Question

① Curved surface area of a right circular cylinder is 4.4 m2

.If the radius of the base of the cylinder is 0.7 m, find

its height.​

Answer 1

Answer:

ANSWER

Given:

⇒R=0.7m

⇒CSA=4.4 m

2

Let's assume height be x

⇒2πrh=4.4 m

2

⇒2×

7

22

×0.7x=4.4

⇒x=

2×22×0.7

4.4×7

=1m

⇒Height =1m

Step-by-step explanation:

hope it helps you

Answer 2

Given :

• CSA of right circular cylinder = 4.4 m²
• Radius of base of cylinder = 0.7 m

To find :

• Height of cylinder

Solution :

From the question we have ,

⇔ CSA of cylinder = 4.4 m²

⇔ Base of cylinder (r) = 0.7 m

As we know formula :

$\longmapsto\large\underline{\boxed{\bold{CSA \ of \ cylinder = 2 \pi r h }}}$

Now putting all values in formula :

$\longrightarrow\sf 4.4 = 2 \times \dfrac{22}{7} \times 0.7 \times h \\\\\\ \longrightarrow\sf 4.4 = \dfrac{30.8 \times h}{7} \\\\\\ \longrightarrow\sf 4.4 \times 7 = 30.8 \times h \\\\\\ \longrightarrow\sf 30.8 = 30.8 \times h \\\\\\ \longrightarrow\sf h = \dfrac{30.8}{30.8} \\\\\\ \longrightarrow\underline{\boxed{\sf{ h = 1 \ m }}} \ \star \\\\\\\\ \therefore\underline{\textsf{\ \ Height of cylinder = {\textbf{1 m \ \ }}}}$