Question

Please help me with this

Answer 1

I'm Sure the answer is 6 cm.

Answer 2

first use the formula it is 1/3 × base area × height =volume of pyramid

so we just need to replace some of the information given in the statement to our formula

so it's going to be,i'll let the height as unknown X

128=1/3 × (8 × 8) × X

so it's going to be

128=64/3X

so X is 128 ÷ 64/3=6cm