Question

Help me please it’s due by today

Answer 1

LSA:-

Area of one triangle:-

• 1/2(Base)(Height)
• 1/2(9)(12)
• 6(9)
• 54cm²

LSA

• 4(54)
• 216cm²

TSA:-

Area of square:-

• side²
• 9²
• 81cm²

TSA:-

• 81+216=297cm²

Answer 2

D

Explanation:

Lateral SA = area of the 4 triangles

Formula to be used :-

Area (triangle) = 1/2bh

=> 4 x 1/2 x 9 x 12

=> 108 x 2

=> 216 cm²

Total SA = LSA + area of the square

Formula to be used :-

Area (square) = side length x side length

=> 216 + 9 x 9

=> 216 + 81

=> 297 cm²

The correct option is (D).