Question

Please help me to solve the problems​

Answer 1

Answer:

Q.5) L=12m

B=11m

H=15m

total surface area of cuboidal box

=2(LB+BH+HL)

=2[(12×11)+(11×15)+(15×12)]

=2(132+165+180)

=2(477)

=954cm²

Q.6) r=1.5m

L=7m

volume of cylinder

$= \pi {r}^{2} h \\ = \frac{22}{7} \times \frac{15}{10} \times \frac{15}{10} \times 7 \\ = \frac{99}{2} \\ = 49.5 {m}^{3}$

Q.7) surface area = 600m²

6L²=600

$6 {l}^{2} = 600 \\ {l}^{2} = \frac{600}{6} \\ {l}^{2} = 100 \\ l = 10$

Q.8) I don't know

Q.9) I don't know

Q.10) (13x+7y)²

=(13x+7y)²

=(a+b)²

=a²+2ab+b²

=(13x)²+2(13x)(7y)+(7y)²

=169x²+182xy+14y²

Step-by-step explanation:

hope it helps u

plz mark me as brainliest

plz drop some thanks