Answer:
216 cm²
Step-by-step explanation:
surface area = 2×base + lateral surface area
…………………………………………………
The base is a right triangle then
The area of the base = (8 × 6)÷2 = 48 ÷2 = 24
lateral surface area = 7 × (10+8+6) = 7 × (24) = 168
Conclusion:
surface area =surface area = 2×base + lateral surface area
= 2×24 + 168
= 48 + 168
= 2×24 + 168
= 216
