Respuesta :
Surface area is multiplying the width and the height of a rectangle or square,
Of a circle you take the radius which is half the diameter, multiplied by pi or 3.14
Triangle you multiply the two 1/2 the base times the length
Of a circle you take the radius which is half the diameter, multiplied by pi or 3.14
Triangle you multiply the two 1/2 the base times the length