6 cm 7 cm
WEES
7 cm
8 cm
12 cm

Can someone explain how to find Surface Area on this? Thank you

45cm²

Step-by-step explanation:

The specified area is a trapezium.

The area if a trapezium is = ½(a+b)h

height = 5cm

Note: a and b are what we call legs.

a = 6cm

b = 12cm

½ × (6 + 12) × 5

½ × 18 × 5

(half of 18 is 9)

9 × 5 = 45cm²

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b