Antonio's toy boat is bobbing in the water under a dock. The vertical distance H (in cm) between the dock and
the top of the boat's mast t seconds after its first peak is modeled by the following function. Here, t is entered in
radians.
H(t) = 5 cos (+) - 35.5
How long does it take the toy boat to bob down from its peak to a height of -35 cm?
Round your final answer to the nearest tenth of a second.

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?