PLEASE HELP ME
ok again just plug there value int the formula
what you get @judtpleasegahd
Well first to help you can find out what 880 * pi is :P What is 880 * 3.14?
2763.2
28?
Yes so we know the SA is 2763.2 cm squared. SA = 2 * 3.14 * \(\rm r^2\) + 2 * 3.14 * rh Now we plug in the information below where it belongs in the formula above. Radius ( r ) - 8 Surface Area ( SA ) - 2763.2 2763.2 = 2 * 3.14 * \(\rm 8^2\) + 2 * 3.14 * 8h
Now first do the exponents. The only exponent is \(8^2\) which is 8 * 8 So what is 8 * 8
64
Please let the asker answer, thanks :) But yes it is 64, now we plug in 64 where \(8^2\) was in the equation. 2763.2 = 2 * 3.14 * \(8^2\) + 2 * 3.14 * 8h 2763.2 = 2 * 3.14 * 64 + 2 * 3.14 * 8h Now we must multiply from left to right, so we start with 2 * 3.14 What is 2 * 314?
2 * 3.14 not 314 sorry!
6.28
Nope 8 * 8 = 64 :P 8 + 8 = 16
8 times 8 is 64 8 + 8 is 16
2763.2=2*3.142*8(8+h) 2763.2=50.272(8+h) 2763.2/50.272=8+h 54.96=8+h h=54.96-8 h=46.96
Correct! now we plug in 6.28 where 2 * 3.14 was in the equation..! 2763.2 = 2 * 3.14 * 64 + 2 * 3.14 * 8h 2763.2 = 6.28 * 64 + 2 * 3.14 * 8h Still multiplying from left to right, now we multiply 6.28 and 64 So what is 6.28 * 64?
401.92
Zain I said once. Please let the asker answer :) Thanks
401.92
as i have taken common in above solution
ok @sammixboo
But yeah it equals 401.92 So plug in 401.92 where 6.28 * 64 was :) 2763.2 = 6.28 * 64 + 2 * 3.14 * 8h 2763.2 = 401,92 + 2 * 3.14 * 8h Now STILL multiplying left from right, we multiply 2 and 3.14 What is 2 * 3.14?
nice writing
thanks.. :)
lol...
thanks everyone
welcome..!
The volume for a rectangular prism is given by the formula V = l · w · h, where l is the length of the prism, w is the width of the prism, and h is the height of the prism. The volume of a rectangular prism is 729 cubic inches. If the length and height are 9 inches each, what is the width of the rectangular prism? 81 inches 711 inches 72 inches 9 inches
@judtpleasegahd check mine solution
V=l . w .h 729=9 . w. 9 729=81 .w 729/81=w 9=w
D
Join our real-time social learning platform and learn together with your friends!