Question

the total surface area of cuboid is 8.5 cm and it's lateral surface is 63cm find the area of it's base​

Answer 1

Answer:

L.S.A=11CM

Step-by-step explanation:

T.S.A OF CUBIOD =2(LB+BH+HL)

L.S.A OF CUBIOD = 2H(L+B)

2(LB+BH+HL)=85

LB+BH+HL=85/2

LB+BH+HL=42.5

LB+H(L+B)=42.5-------------EQ1

2H(L+B)=63

H(L+B)=63/2

H(L+B)=31.5

SUBSTITUTE IN EQ1

LB+31.5=42.5

LB=11

AREA OF BASE= L*B

AREA OF BASE =LB=11

Answer 2

Step-by-step explanation:

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