Answer:
x=15
Step-by-step explanation:
5x+(180-9x)+(180-8x)=180
total of a triangle angles is 180
Answer:
<h2>x = 14</h2><h2 />
Step-by-step explanation:
7x + 9 + 5x + 3 = 180
7x + 5x = 180 - 3 - 9
12x = 168
x = 168 / 12
x = 14
Answer:
C. S.A. = 340.8 
Step-by-step explanation:
Area of rectangles = 6x 12 = 72 
all three have the same area - 72 x 3 = 216 
Area of triangle = 10.4 x 12 ÷ 2
Since there are 2 trignles - 10.4 x 12 = 124.8 
Add all sides up
S.A. = 216
+ 124.8 
S.A. = 340.8 
Answer:
44 cm²
Step-by-step explanation:
Ar(big rect.) = (4+4)×(4+3)
= 8×7
= 56
Ar. of small rect. = 4×3 = 12
Area of X = 56-12
= 44 cm²