What is the surface area of this shape? 1cm 5cm 2cm 3cm 6cm 4cm

Which expression is equivalent to sq-80

What is the perimeter of square abcd? units units 28 units 37 units

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)