Question

*एका लंबवृत्तचितीचे घनफळ 700 घनसेमी असून तळाचे क्षेत्रफळ 100चौसेमी असल्यास लंबउंची किती सेमी असेल?*

1️⃣ 70 सेमी
2️⃣ 7 सेमी
3️⃣ 700 सेमी
4️⃣ 7 चौसेमी​

Answer 1

Given : एका लंबवृत्तचितीचे घनफळ 700 घनसेमी असून तळाचे क्षेत्रफळ 100चौसेमी

The volume of an cylinder is 700 cubic centimeters and  the bottom area is 100 square centimeters,

To Find : the height of the cylinder

लंबउंची किती सेमी

1️⃣ 70 सेमी

2️⃣ 7 सेमी

3️⃣ 700 सेमी

4️⃣ 7 चौसेमी​

Solution:

Volume of cylinder = πR²h  = 700 cm³

h =   the height of the cylinder

πR² = Base area = 100 cm²

=> 100 h = 700

=> h = 7 cm

लंबउंची 7 सेमी  

the height of the cylinder = 7 cm

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