Answer:
c
Step-by-step explanation:
c
Answer:
10
Step-by-step explanation:
It's just symmetry. You see that the geometrical construction above has been rotated, so its properties will remain the same.
Let A be the surface area, b the base, h the height;
h₁=8.4 cm
h₂=7.8 cm
b= 9 cm
A= 3(1/2bh₁)+1/2 bh₂
A=3(1/2(9)(8.4))+1/2 (9)(7.8)
A= 148.5 cm³
<u>Explanation</u><u> </u><u>:</u>
<h3 />
<u>By doing cross multiplication, we get-----</u>
=>p-6=3(p+7)
=>p-6=3p+21 =>p-3p=21+6
=>-2p=27
=>p=27/-2
=>p=-27/2
<h3><u>Verification:</u></h3>
<u>By,putting the value of p in the equation, we get----</u>
<u>(</u><u>LHS)</u>=(-27/2+7)/(-27/2-6)=1/3<u>(</u><u>RHS)</u>
=>(-27+14/2)/(-27-12/2)=1/3
=>(-13/2)/(-39/2)=1/3
=>-13/2×2/-39=1/3
=>1/3=1/3
<u>Hence,LHS=RHS verified.</u>
