Respuesta :

Answer:

100 square feet (100 ft²)

Step-by-step explanation:

Formula

  • Area (trapezoid) = 1/2 x sum of parallel sides x height
  • Area (parallelogram) = base x height

Area of stage

  • Area (trapezoid) + Area (parallelogram)
  • 1/2 x (8 + 12) x 4 + 4 x 15
  • 2 x 20 + 60
  • 40 + 60
  • 100 square feet

Area of trapezoid:-

  • 1/2(Sum of parallel sides×Height)
  • 1/2(8+12)×4
  • 2(20)
  • 40ft²

Area of parallelogram

  • BH
  • 15(4)
  • 60ft²

Total:-

  • 60+40=100ft²