Answer:
hope this will help you ( ◜‿◝ )♡
Step-by-step explanation:
lateral surface area of the solid=ph
=(a+b+c)*h
=(5+4+3)*15
=12*15
=180cm²
Answer:
1 = d
2= $128
3= d
Step-by-step explanation:
Answer: 32.5a + 20.47b
Step-by-step explanation:
Cos² 2x = (1+cos 4x )/2
cos² 6x = (1+cos 12x)/2
subtract to get 1/2 (cos 4x - cos 12x )
= 1/2 (2 sin 4x sin 8x ) as cos A - cos B = 2 [ sin (A+B)/2 sin (A-B)/2 ]
so the answer