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What is the surface area of this square pyramid?
A;3600 yd2

B:6300 yd2

C:2925 yd2

D:2700 yd2 Please Help! (100 Points!)

What is the surface area of this square pyramid A3600 yd2 B6300 yd2 C2925 yd2 D2700 yd2 Please Help 100 Points class=

Respuesta :

Answer:

A;3600 yd2

Step-by-step explanation:

The surface area is found by adding the area of the sides

The area of the bottom is

A= s^2 where s is the side length since it is a square

A = s^2 = 30^2= 900

We can find the area of one of the sides and multiply by 4 since all the sides are the same

The sides are triangles so

A = 1/2 bh  where b is the base b=30 and h is the height = 45

A = 1/2 (30)* 45

A = 675

We have 4 of these triangles

4*675 =2700

Add the 4 triangles and the bottom

2700+900

3600