Question

5. Correct your friend who says, "The car rounded the curve at a constant velocity of
70km/h" ​

Answer 1

Answer:

??????????????? I didn't get it.

Answer 2

Answer:

$EXPLANATION.</p><p></p><p>Radius of circular end of frustum are = 28 cmand 7 cm.</p><p></p><p>height of frustum = 7 </p><p></p><p></p><p>To find the volume of frustum.</p><p></p><p>\begin{gathered}\sf : \implies \: formula \: of \: volume \: of \: frustum \: of \: cone \\ \\ \sf : \implies \: \frac{1}{3}\pi \: h( r_{1} {}^{2} + r_{2} {}^{2} + r_{1} r_{2})\end{gathered}:⟹formulaofvolumeoffrustumofcone:⟹31πh(r12+r22+r1r2)</p><p>\begin{gathered}\sf : \implies \: \dfrac{1}{3} \times \frac{22}{7} \times 7(28) {}^{2} + (7) {}^{2} + (28 \times 7) \\ \\ \sf : \implies \: \frac{1}{3} \times 22 \times 28 \times 28 + 49 + 196 \\ \\ \sf : \implies \: \frac{1}{3} \times (17248 + 49 + 196) \\ \\ \sf : \implies \: \frac{1}{3} \times (17493) = 5831cm {}^{3}\end{gathered}:⟹31×722×7(28)2+(7)2+(28×7):⟹31×22×28×28+49+196:⟹31×(17248+49+196):⟹31×(17493)=5831cm3</p><p>\sf : \implies \: \green{{ \underline{volume \: of \: frustum \: of \: cone \: = 5831 \: cm {}^{3} }}}:⟹volumeoffrustumofcone=5831cm3</p><p>$