shy2876 shy2876

11-06-2021
Mathematics

contestada

6 cm
7 cm
WEES
7 cm
8 cm
12 cm

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

6 cm 7 cm WEES 7 cm 8 cm 12 cm Can someone explain how to find Surface Area on this Thank you class=

Respuesta :

odiapraise2020 odiapraise2020

14-06-2021

Answer:

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

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