Question

Incorrect Question 2 0/1 pts The first question in this problem is "How fast is the radius of the balloon changing at the instant the balloon's diameter (dis 12 inches?" Which of these sketches best records the known and unknown quantities that are relevant to this question? dr/dt? d=12 dv/dt=20 r=6 d=12 dv/dt=20

question 2 in two parts

Answer 1

To find change in radius of balloon at the 3 3 instant the balloon's diameter (d) il 12 inches. le reading 6). = 6 inches- Volume of Ballon (= I rri Diff" it w.rct it, we we get dv = 2 x 3 x 2² de at dre at dt at & Soi 4T X² 2 de-binches der - L dt tax at I du 1941 at therepre, der dt I du 1997 dt in change in rodin Ô 20 Now, first fig. d=12, dv TE 2 drz at 36T reement first fig gines quantities.

Date Expt. No, Expt. Name Page No. similarly, 4th fig. gines. It=b, dr 2880 IT dt i 4th fig also gines reelement quantities. Ques 3 I. w we find 1 dr elt ㅗ dr 1991 at dv x=1 - K di at at 29911 So, by change in time, Volume & Radius proportionally changes. i AVX Are je change in v is diseally proportional to change c) change in v= du in r Wort t Change in re - dr weet to t at Teacher's Signature :