Answer: 84.
Step-by-step explanation: If you add the width 5cm and 2cm, it gives you 7cm, then length x width so 12x7= 84(cm).
If I am wrong, I am truly sorry, I haven't done area in a long time.
Answer:
the answer is 18 cause if u replace it is will give 45 +45 for the angle beside would give u 90
Answer:

Step-by-step explanation:
The formula of the volume of a cube is
where "a" would correspond to the length of an edge/side/height/etc.
If we insert our value into the formula, we get the following result:



Hope it helped,
BiologiaMagister
A net of a triangular prism looks like this
At θ = 90°, the equation must evaluate to zero. The only one that does that is the 1st choice ...
r = 2 - 2sin(θ)