<u>The angle based on the diameter is always right</u>
Then <ABC=90 and ∠BAC=∠ACB=45° ; and ∠BCD=180-45=135 then x=(180-135):2=22,5°
Answer:
X=11
Step-by-step explanation:
but I think it's -25 because it's on the bottom of -24
Answer:
<h2><u>
4</u></h2>
Step-by-step explanation:




<u>4</u>
Side of base of square, a = 10 km.
Height of pyramid , h = 12 km.
Volume of pyramid is given by :

Surface area is given by :

Therefore, volume and surface area are 400 km³ and 340 km² respectively.
Hence, this is the required solution.