adri8876
adri8876 adri8876
  • 22-02-2019
  • Mathematics
contestada

I need help with this problem

I need help with this problem class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 22-02-2019

Answer:

264 cm^2

Step-by-step explanation:

Area of a trapezoid = 1/2 (b1+b2) *h

The area of the large trapezoid

b1 = 14  b2 = 25  h = 10+12 = 22

A = 1/2 (14+25) *22 = 429 cm^2

The area of the unshaded trapezoid

b1 = 8  b2 = 25  h = 10

A = 1/2 (8+25) *10 = 165 cm^2

To find the area of the shaded region, take the area of the large trapezoid and subtract the unshaded trapezoid

429 - 165 =264 cm^2

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