Outer diameter of 20 cm long pipe is 25 cm. If the thickness of the metal in the pipe is 1 cm. Find the total surface area of the pipe?
Outer part surface area = 2(22/7)Rh Inner part surface area = 2(22/7)rh Area of shaded portion = 2 (22/7) R² - ((22/7) r)² = (22/7) (R² - r²) Total surface area = 2(22/7)Rh + 2(22/7)rh + 2(22/7) (R² - r²) = 2 (22/7) (R+r) [h + R - r] = 2 (22/7) (R+r) [h + thickness] Required surface area = 2× 22/7 (R+r) [h + thickness] = 2× 22/7× (12.5 + 11.5)× 21 = 132× 24 = 3168
In the following question, select the word which can be formed using the letters of the given word 'CORRESPONDING' .
In the following question, select the word which can be formed using the letters of the given word.
FRAGRANCE
In the following question, select the word which cannot be formed using the letters of the given word.
LEVOCETIRIZINE
Which of the following word can’t be formed from the letters of the word “HIBERNATION” from the given alternatives by using each letter only once?...
Find which one of the given words cannot be made from the letters of the given word.
‘ REIMBURSEMENT ’
...From the given alternative words, select the word which cannot be formed using the letters of the given word only once.
DEMOCRATIZATION
Find which one of the given words cannot be made from the letters of the given word ‘ ENVISAGE ’ .
...In the word ‘LAVENDER’, first all the opposites of each letter are written, then all the letters formed are written in an alphabetical order form, t...
Find which one of the given words cannot be made from the letters of the given word.
‘ DELIGHTFUL ’
...Find which one of the given words cannot be made from the letters of the given word.
‘ PUNISHMENT’
...
