Answer:
Step-by-step explanation:
Surface area=2*(lb+lh+bh)
=2*( 5*4 + 5*1.5 + 4*1.5)
=2* ( 20 + 7.5 + 6.0)
= 2 * 33.50
= 67.0 = 67 square units
Answer: 212,520
Step-by-step explanation:
Given : A pianist plans to play 4 pieces at a recital from her repertoire of 23 pieces, and is carefully considering which song to play first, second, etc.
It means the repetition of pieces is not allowed.
When repetition is not allowed , then the number of ways to arrange n things where r things taken together is given by :-
![^nP_r=\dfrac{n!}{(n-r)!}](https://tex.z-dn.net/?f=%5EnP_r%3D%5Cdfrac%7Bn%21%7D%7B%28n-r%29%21%7D)
Now, the number of different recital programs are :-
![^{23}P_4=\dfrac{23!}{(23-4)!}=\dfrac{23\times22\times21\times20\times19!}{19!}=212,520](https://tex.z-dn.net/?f=%5E%7B23%7DP_4%3D%5Cdfrac%7B23%21%7D%7B%2823-4%29%21%7D%3D%5Cdfrac%7B23%5Ctimes22%5Ctimes21%5Ctimes20%5Ctimes19%21%7D%7B19%21%7D%3D212%2C520)
Hence, there are 212,520 different recital programs possible.
Answer:
1144cm²
Approx. 1100cm²
Step-by-step explanation:
Area of rectangle=
L×B
34×20 = 680cm²
Area of semi-circle=
πr²
3.14 × (10)² = 314cm²
Area of triangle=
½b×h
b = 49 - 34 = 15
<u>2</u><u>0</u><u> </u><u>×</u><u> </u><u>1</u><u>5</u> = 150cm²
2
Area of shape =
680 + 314 + 150 = 1144cm²
approx. 1100cm²
Please mark my answer as brainliest <3
8^2 + 13^2 = c^2
64 + 169 = c^2
233 = c^2
15.26 = c
your answer would be A. 15.3
hope that helped