Answer:
106 cm²
Step-by-step explanation:
the surface area is the sum of the areas of the faces of the prism
area of 2 rectangles (left/ right ) = 2 × 7 × 5 = 70 cm²
area of central rectangle = 3 × 7 = 21 cm²
area of 2 congruent triangles = 2 × 
× 3 × 5 = 3 × 5 = 15 cm²
surface area = 70 + 21 + 15 = 106 cm²
B(cone)=B(pyramid)=r²π
V(pyramid)=1/3 * B * H = 1/3 * r² π * 3 r ( 3 will cancel out )= r³ π
Answer: r³ π
Answer:
21
Step-by-step explanation:
Step 1:
0.6x - 0.1 = 0.5x + 2 Equation
Step 2:
0.1x - 0.1 = 2 Subtract 0.5x on both sides
Step 3:
0.1x = 2.1 Add 0.1 on both sides
Step 4:
x = 2.1 ÷ 0.1 Divide
Ansewr:
x = 21
Hope This Helps :)
Answer:
(sss) condition
Step-by-step explanation:
hope the ans helped you
35% off means that now it costs 100%-35%=65% of the original price
<span>£78 ---- 65%
x------100%
x=78*100/65=120</span>£<span>
or
part/whole=0.65
78/whole=0.65
whole =78/0.65 =120 </span>£
