amy2008awesome
amy2008awesome amy2008awesome
  • 08-06-2020
  • Mathematics
contestada

calculate the surface area of the following shape

1. 450cm2
2. 294cm2
3. 358cm2
4. 716cm2

calculate the surface area of the following shape 1 450cm2 2 294cm2 3 358cm2 4 716cm2 class=

Respuesta :

Rachel980
Rachel980 Rachel980
  • 08-06-2020

Answer:

210cm2

Step-by-step explanation:

Area of rectangle: HxW

Area of Triangle: 1/2 x bx h

There are 3 rectangles with the length of 14x3

14x3x3

= 14x9

= 126cm2

There are two triangles with the height of 12 and base of 14.

1/2x 14x 12

= 1/2x 168

= 168/2

= 84cm2

Now finally add them together:

84+126

= 210cm2

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fadia17 fadia17
  • 09-06-2020
I just put the answer in the come t
Answer Link

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