Vanessa and richie are riding their bikes down a trail to the next campground. vanessa rides at 16 mph while richie rides at 3 mph. since vanessa is a little speedier, she stays behind and cleans up camp for 30 minutes before leaving. how long has richie been riding when vanessa is 5 miles ahead of richie?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

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He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2