Answer:
A. SA=20610 cm
B. SA=1256 cm²
Step-by-step explanation:
A. SQUARE PYRAMID
SA=S×S+4×(b×h)/2
Given: base= 15cm slant height: 12cm
Solution:
SA=15×15+4×(15×12)/2
SA=225+4×(15×12)/2
SA=229×(15×12)/2
SA=229×(180)/2
SA=41220/2
SA=20610
ANSWER: 20610 cm
B. SPHERE
SA=4πr²
Given: r=10cm
Solution:
SA=4(3.14)(10)²
SA=(12.56)(100)
SA=1256
ANSWER:1256 cm²
