Answer:
Step-by-step explanation:
There are 4 sides that will be 7cm×2cm
14cm x 4 = 56cm
2 sides which are 2cm × 2cm = 4cm
4cm × 2 = 8cm
56cm + 8cm =
64cm squared
Answer:
-10x + (8x - 32) + 7
-10x + 8(x - 4) + 7
-20x + 8(2x-8) + 14
Step-by-step explanation:
-10x + (8x - 32) + 7
Multiplied the 4 outside the parentheses
-10x + 8(x - 4) + 7
Took 2 out of the parenthesis
-20x + 8(2x-8) + 14
Multiplied the entire thing by 2
1/2(x + 4) = -12
1/2x + 2 = -12
1/2x = -10
x = -20
Answer:
length :16cm
wide :20cm
We have
Area of inner frame :16*20=320cm²
For
Total area =464cm²
(20+2x)(16+2x)=464cm²
320+32x+40x+4x²=464cm²
4x²+72x+320-464=0
4x²+72x-144=0
4(x²+18x-36)=0
x²+2.9.x+9²=9²+36
(x+9)²=117
x+9=√117
x=10.81-9
x=1.82[approximately]
So
<u>width of frame;20cm+1.82+1.82=23.64cm</u>
<u>length: 16+1.82+1.82=19.64cm</u>
Here length is smaller than breadth.