Area of the house on the slide = 1.75 cm^{2}

Area of the image of the house formed on the screen = 1.55 m^{2}

= 1.55 × 10^{4} cm^{2}

Arial magnification, m_{a} = (Area of image/Area of object) = (1.55/1.75) x 10^{4}

Linear magnifications, ml = √m_{a} = √(1.55/1.75) x 10^{4} = 94.11